diff --git a/bin/check-deps.js b/bin/check-deps.js
index f4a2dafc..1423f73c 100755
--- a/bin/check-deps.js
+++ b/bin/check-deps.js
@@ -46,11 +46,14 @@ var BUILT_IN_ELECTRON_MODULES = [ 'electron' ]
 var BUILT_IN_DEPS = [].concat(BUILT_IN_NODE_MODULES, BUILT_IN_ELECTRON_MODULES)
 
 var EXECUTABLE_DEPS = [
-  'gh-release',
-  'standard',
   'babel-cli',
   'babel-plugin-syntax-jsx',
-  'babel-plugin-transform-react-jsx'
+  'babel-plugin-transform-es2015-destructuring',
+  'babel-plugin-transform-object-rest-spread',
+  'babel-plugin-transform-react-jsx',
+  'gh-release',
+  'nodemon',
+  'standard'
 ]
 
 main()
diff --git a/package.json b/package.json
index 1e99e687..f9448c9a 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,6 @@
     "application-config": "^1.0.0",
     "bitfield": "^1.0.2",
     "chromecasts": "^1.8.0",
-    "classnames": "^2.2.5",
     "create-torrent": "^3.24.5",
     "deep-equal": "^1.0.1",
     "dlnacasts": "^0.1.0",
@@ -29,12 +28,14 @@
     "iso-639-1": "^1.2.1",
     "languagedetect": "^1.1.1",
     "location-history": "^1.0.0",
+    "material-ui": "^0.15.4",
     "musicmetadata": "^2.0.2",
     "network-address": "^1.1.0",
     "parse-torrent": "^5.7.3",
     "prettier-bytes": "^1.0.1",
     "react": "^15.2.1",
     "react-dom": "^15.2.1",
+    "react-tap-event-plugin": "^1.0.0",
     "run-parallel": "^1.1.6",
     "semver": "^5.1.0",
     "simple-concat": "^1.0.0",
diff --git a/src/renderer/main.js b/src/renderer/main.js
index 54e27385..5659c382 100644
--- a/src/renderer/main.js
+++ b/src/renderer/main.js
@@ -5,9 +5,12 @@ crashReporter.init()
 
 const dragDrop = require('drag-drop')
 const electron = require('electron')
+const fs = require('fs')
 const React = require('react')
 const ReactDOM = require('react-dom')
-const fs = require('fs')
+
+// Required by Material UI -- adds `onTouchTap` event
+require('react-tap-event-plugin')()
 
 const config = require('../config')
 const App = require('./views/app')
diff --git a/src/renderer/views/Button.js b/src/renderer/views/Button.js
deleted file mode 100644
index a8aa09d3..00000000
--- a/src/renderer/views/Button.js
+++ /dev/null
@@ -1,40 +0,0 @@
-const c = require('classnames')
-const React = require('react')
-
-class Button extends React.Component {
-  static get propTypes () {
-    return {
-      className: React.PropTypes.string,
-      onClick: React.PropTypes.func,
-      theme: React.PropTypes.oneOf(['light', 'dark']),
-      type: React.PropTypes.oneOf(['default', 'flat', 'raised'])
-    }
-  }
-
-  static get defaultProps () {
-    return {
-      theme: 'light',
-      type: 'default'
-    }
-  }
-
-  render () {
-    const { theme, type, className, ...other } = this.props
-    return (
-      <button
-        {...other}
-        className={c(
-          'Button',
-          theme,
-          type,
-          className
-        )}
-        onClick={this.props.onClick}
-      >
-        {this.props.children}
-      </button>
-    )
-  }
-}
-
-module.exports = Button
diff --git a/src/renderer/views/PathSelector.js b/src/renderer/views/PathSelector.js
index d5013a97..5069eed1 100644
--- a/src/renderer/views/PathSelector.js
+++ b/src/renderer/views/PathSelector.js
@@ -1,38 +1,33 @@
-const c = require('classnames')
 const electron = require('electron')
 const React = require('react')
 
 const remote = electron.remote
 
-const Button = require('./Button')
-const TextInput = require('./TextInput')
+const RaisedButton = require('material-ui/RaisedButton').default
+const TextField = require('material-ui/TextField').default
 
 class PathSelector extends React.Component {
   static get propTypes () {
     return {
       className: React.PropTypes.string,
-      defaultValue: React.PropTypes.string.isRequired,
       dialog: React.PropTypes.object,
-      label: React.PropTypes.string.isRequired,
-      onChange: React.PropTypes.func
+      displayValue: React.PropTypes.string,
+      id: React.PropTypes.string,
+      onChange: React.PropTypes.func,
+      title: React.PropTypes.string.isRequired,
+      value: React.PropTypes.string.isRequired
     }
   }
 
   constructor (props) {
     super(props)
-
-    this.state = {
-      value: props.defaultValue
-    }
-
     this.handleClick = this.handleClick.bind(this)
   }
 
   handleClick () {
     var opts = Object.assign({
-      defaultPath: this.state.value,
-      properties: [ 'openFile', 'openDirectory' ],
-      title: this.props.label
+      defaultPath: this.props.value,
+      properties: [ 'openFile', 'openDirectory' ]
     }, this.props.dialog)
 
     remote.dialog.showOpenDialog(
@@ -40,28 +35,52 @@ class PathSelector extends React.Component {
       opts,
       (filenames) => {
         if (!Array.isArray(filenames)) return
-        this.setState({value: filenames[0]})
         this.props.onChange && this.props.onChange(filenames[0])
       }
     )
   }
 
   render () {
+    const id = this.props.title.replace(' ', '-').toLowerCase()
     return (
-      <div className={c('PathSelector', this.props.className)}>
-        <div className='label'>{this.props.label}:</div>
-        <TextInput
-          className='input'
-          disabled
-          value={this.state.value}
-        />
-        <Button
-          className='button'
-          theme='dark'
-          onClick={this.handleClick}
+      <div
+        className={this.props.className}
+        style={{
+          alignItems: 'center',
+          display: 'flex',
+          width: '100%'
+        }}
+      >
+        <div
+          className='label'
+          style={{
+            flex: '0 auto',
+            marginRight: 10,
+            overflow: 'hidden',
+            textOverflow: 'ellipsis',
+            whiteSpace: 'nowrap'
+          }}
         >
-          Change…
-        </Button>
+          {this.props.title}:
+        </div>
+        <TextField
+          className='control'
+          disabled
+          id={id}
+          style={{
+            flex: '1',
+            fontSize: 14
+          }}
+          value={this.props.displayValue || this.props.value}
+        />
+        <RaisedButton
+          className='control'
+          label='Change'
+          onClick={this.handleClick}
+          style={{
+            marginLeft: 10
+          }}
+        />
       </div>
     )
   }
diff --git a/src/renderer/views/PreferencesPage.js b/src/renderer/views/PreferencesPage.js
index 5e338523..2ba3532d 100644
--- a/src/renderer/views/PreferencesPage.js
+++ b/src/renderer/views/PreferencesPage.js
@@ -1,33 +1,142 @@
 const React = require('react')
 const path = require('path')
 
-const PathSelector = require('./PathSelector')
+const Checkbox = require('material-ui/Checkbox').default
+const colors = require('material-ui/styles/colors')
+const RaisedButton = require('material-ui/RaisedButton').default
 
+const PathSelector = require('./PathSelector')
 const {dispatch} = require('../lib/dispatcher')
 
 class PreferencesPage extends React.Component {
-  render () {
-    var state = this.props.state
+  constructor () {
+    super()
+
+    this.handleDownloadPathChange =
+      this.handleDownloadPathChange.bind(this)
+
+    this.handleOpenExternalPlayerChange =
+      this.handleOpenExternalPlayerChange.bind(this)
+
+    this.handleExternalPlayerPathChange =
+      this.handleExternalPlayerPathChange.bind(this)
+  }
+
+  downloadPathSelector () {
     return (
-      <div className='PreferencesPage'>
+      <Preference>
+        <PathSelector
+          dialog={{
+            title: 'Select download directory',
+            properties: [ 'openDirectory' ]
+          }}
+          onChange={this.handleDownloadPathChange}
+          title='Download location'
+          value={this.props.state.unsaved.prefs.downloadPath}
+        />
+      </Preference>
+    )
+  }
+
+  handleDownloadPathChange (filePath) {
+    dispatch('updatePreferences', 'downloadPath', filePath)
+  }
+
+  openExternalPlayerCheckbox () {
+    return (
+      <Preference>
+        <Checkbox
+          className='control'
+          checked={!this.props.state.unsaved.prefs.openExternalPlayer}
+          label={'Play torrent media files using WebTorrent'}
+          onCheck={this.handleOpenExternalPlayerChange}
+        />
+      </Preference>
+    )
+  }
+
+  handleOpenExternalPlayerChange (e, isChecked) {
+    dispatch('updatePreferences', 'openExternalPlayer', !isChecked)
+  }
+
+  externalPlayerPathSelector () {
+    const playerName = path.basename(
+      this.props.state.unsaved.prefs.externalPlayerPath || 'VLC'
+    )
+
+    const description = this.props.state.unsaved.prefs.openExternalPlayer
+      ? `Torrent media files will always play in ${playerName}.`
+      : `Torrent media files will play in ${playerName} if WebTorrent cannot ` +
+        'play them.'
+
+    return (
+      <Preference>
+        <p>{description}</p>
+        <PathSelector
+          dialog={{
+            title: 'Select media player app',
+            properties: [ 'openFile' ]
+          }}
+          displayValue={playerName}
+          onChange={this.handleExternalPlayerPathChange}
+          title='External player'
+          value={this.props.state.unsaved.prefs.externalPlayerPath}
+        />
+      </Preference>
+    )
+  }
+
+  handleExternalPlayerPathChange (filePath) {
+    if (path.extname(filePath) === '.app') {
+      // Mac: Use executable in packaged .app bundle
+      filePath += '/Contents/MacOS/' + path.basename(filePath, '.app')
+    }
+    dispatch('updatePreferences', 'externalPlayerPath', filePath)
+  }
+
+  setDefaultAppButton () {
+    return (
+      <Preference>
+        <p>WebTorrent is not currently the default torrent app.</p>
+        <RaisedButton
+          className='control'
+          onClick={this.handleSetDefaultApp}
+          label='Make WebTorrent the default'
+        />
+      </Preference>
+    )
+  }
+
+  handleSetDefaultApp () {
+    window.alert('TODO')
+    // var isFileHandler = state.unsaved.prefs.isFileHandler
+    // dispatch('updatePreferences', 'isFileHandler', !isFileHandler)
+  }
+
+  render () {
+    return (
+      <div
+        style={{
+          color: colors.grey400,
+          marginLeft: 20,
+          marginRight: 20
+        }}
+      >
         <PreferencesSection title='Downloads'>
-          <Preference>
-            {DownloadPathSelector(state)}
-          </Preference>
+          {this.downloadPathSelector()}
         </PreferencesSection>
         <PreferencesSection title='Playback'>
-          <Preference>
-            {ExternalPlayerPathSelector(state)}
-          </Preference>
+          {this.openExternalPlayerCheckbox()}
+          {this.externalPlayerPathSelector()}
+        </PreferencesSection>
+        <PreferencesSection title='Default torrent app'>
+          {this.setDefaultAppButton()}
         </PreferencesSection>
       </div>
     )
   }
 }
 
-// {ExternalPlayerCheckbox(state)}
-// {DefaultAppCheckbox(state)}
-
 class PreferencesSection extends React.Component {
   static get propTypes () {
     return {
@@ -37,8 +146,18 @@ class PreferencesSection extends React.Component {
 
   render () {
     return (
-      <div className='PreferencesSection'>
-        <h2 className='title'>{this.props.title}</h2>
+      <div
+        style={{
+          marginBottom: 30,
+          marginTop: 30
+        }}
+      >
+        <h2
+          style={{
+            color: colors.grey50,
+            fontSize: 22
+          }}
+        >{this.props.title}</h2>
         {this.props.children}
       </div>
     )
@@ -48,119 +167,15 @@ class PreferencesSection extends React.Component {
 class Preference extends React.Component {
   render () {
     return (
-      <div className='Preference'>
+      <div
+        style={{
+          marginBottom: 10
+        }}
+      >
         {this.props.children}
       </div>
     )
   }
 }
 
-function DownloadPathSelector (state) {
-  return (
-    <PathSelector
-      className='download-path'
-      label='Download location'
-      dialog={{
-        title: 'Select download directory',
-        properties: [ 'openDirectory' ]
-      }}
-      defaultValue={state.unsaved.prefs.downloadPath}
-      onChange={handleChange}
-    />
-  )
-
-  function handleChange (filePath) {
-    dispatch('updatePreferences', 'downloadPath', filePath)
-  }
-}
-
-function ExternalPlayerPathSelector (state) {
-  return (
-    <PathSelector
-      className='download-path'
-      label='Player app location'
-      dialog={{
-        title: 'Select media player app',
-        properties: [ 'openFile' ]
-      }}
-      defaultValue={state.unsaved.prefs.externalPlayerPath || '<VLC>'}
-      onChange={handleChange}
-    />
-  )
-
-  function handleChange (filePath) {
-    if (path.extname(filePath) === '.app') {
-      // Get executable in packaged mac app
-      var name = path.basename(filePath, '.app')
-      filePath += '/Contents/MacOS/' + name
-    }
-    dispatch('updatePreferences', 'externalPlayerPath', filePath)
-  }
-}
-
-// function ExternalPlayerCheckbox (state) {
-//   return renderCheckbox({
-//     label: 'Play in External Player',
-//     description: 'Media will play in external player',
-//     property: 'openExternalPlayer',
-//     value: state.saved.prefs.openExternalPlayer
-//   },
-//   state.unsaved.prefs.openExternalPlayer,
-//   function (value) {
-//     dispatch('updatePreferences', 'openExternalPlayer', value)
-//   })
-// }
-
-// function renderCheckbox (definition, value, callback) {
-//   var iconClass = 'icon clickable'
-//   if (value) iconClass += ' enabled'
-
-//   return (
-//     <div key='{definition.key}' className='control-group'>
-//       <div className='controls'>
-//         <label className='control-label'>
-//           <div className='preference-title'>{definition.label}</div>
-//         </label>
-//         <div className='controls'>
-//           <label className='clickable' onClick={handleClick}>
-//             <i
-//               className={iconClass}
-//               id='{definition.property}'
-//             >
-//               check_circle
-//             </i>
-//             <span className='checkbox-label'>{definition.description}</span>
-//           </label>
-//         </div>
-//       </div>
-//     </div>
-//   )
-//   function handleClick () {
-//     callback(!value)
-//   }
-// }
-
-// function DefaultAppCheckbox (state) {
-//   var definition = {
-//     key: 'file-handlers',
-//     label: 'Handle Torrent Files'
-//   }
-//   var buttonText = state.unsaved.prefs.isFileHandler
-//     ? 'Remove default app for torrent files'
-//     : 'Make WebTorrent the default app for torrent files'
-//   var controls = [(
-//     <button key='toggle-handlers'
-//       className='btn'
-//       onClick={toggleFileHandlers}>
-//       {buttonText}
-//     </button>
-//   )]
-//   return renderControlGroup(definition, controls)
-
-//   function toggleFileHandlers () {
-//     var isFileHandler = state.unsaved.prefs.isFileHandler
-//     dispatch('updatePreferences', 'isFileHandler', !isFileHandler)
-//   }
-// }
-
 module.exports = PreferencesPage
diff --git a/src/renderer/views/TextInput.js b/src/renderer/views/TextInput.js
deleted file mode 100644
index 24e26252..00000000
--- a/src/renderer/views/TextInput.js
+++ /dev/null
@@ -1,34 +0,0 @@
-const c = require('classnames')
-const React = require('react')
-
-class TextInput extends React.Component {
-  static get propTypes () {
-    return {
-      theme: React.PropTypes.oneOf('light', 'dark'),
-      className: React.PropTypes.string
-    }
-  }
-
-  static get defaultProps () {
-    return {
-      theme: 'light'
-    }
-  }
-
-  render () {
-    const { className, theme, ...other } = this.props
-    return (
-      <input
-        {...other}
-        className={c(
-          'TextInput',
-          theme,
-          className
-        )}
-        type='text'
-      />
-    )
-  }
-}
-
-module.exports = TextInput
diff --git a/src/renderer/views/app.js b/src/renderer/views/app.js
index f6f3677a..94d4f687 100644
--- a/src/renderer/views/app.js
+++ b/src/renderer/views/app.js
@@ -1,5 +1,9 @@
 const React = require('react')
 
+const darkBaseTheme = require('material-ui/styles/baseThemes/darkBaseTheme').default
+const getMuiTheme = require('material-ui/styles/getMuiTheme').default
+const MuiThemeProvider = require('material-ui/styles/MuiThemeProvider').default
+
 const Header = require('./header')
 
 const Views = {
@@ -16,8 +20,11 @@ const Modals = {
   'unsupported-media-modal': require('./unsupported-media-modal')
 }
 
-module.exports = class App extends React.Component {
+var muiTheme = getMuiTheme(Object.assign(darkBaseTheme, {
+  fontFamily: 'BlinkMacSystemFont, \'Helvetica Neue\', Helvetica, sans-serif'
+}))
 
+module.exports = class App extends React.Component {
   constructor (props) {
     super(props)
     this.state = props.state
@@ -47,12 +54,14 @@ module.exports = class App extends React.Component {
     if (hideControls) cls.push('hide-video-controls')
 
     var vdom = (
-      <div className={'app ' + cls.join(' ')}>
-        <Header state={state} />
-        {this.getErrorPopover()}
-        <div key='content' className='content'>{this.getView()}</div>
-        {this.getModal()}
-      </div>
+      <MuiThemeProvider muiTheme={muiTheme}>
+        <div className={'app ' + cls.join(' ')}>
+          <Header state={state} />
+          {this.getErrorPopover()}
+          <div key='content' className='content'>{this.getView()}</div>
+          {this.getModal()}
+        </div>
+      </MuiThemeProvider>
     )
 
     return vdom
diff --git a/static/css/components/Button.css b/static/css/components/Button.css
deleted file mode 100644
index b05108ef..00000000
--- a/static/css/components/Button.css
+++ /dev/null
@@ -1,76 +0,0 @@
-.Button {
-  -webkit-app-region: no-drag;
-  background: transparent;
-  border-radius: 3px;
-  border: none;
-  color: #aaa;
-  cursor: default;
-  font-size: 14px;
-  font-weight: bold;
-  margin-left: 10px;
-  outline: none;
-  padding: 0;
-  padding: 7px 18px;
-  text-transform: uppercase;
-}
-
-/**
- * Default button
- */
-
-.Button.default {
-  color: #222;
-  background-color: rgba(153, 153, 153, 0.1);
-}
-
-.Button.default.dark {
-  color: #eee;
-}
-
-.Button.default:hover,
-.Button.default:focus { /* Material design: focused */
-  background-color: rgba(153, 153, 153, 0.2);
-}
-
-.Button.default:active { /* Material design: pressed */
-  background-color: rgba(153, 153, 153, 0.4);
-}
-
-/**
- * Flat button
- */
-
-.Button.flat {
-  color: #222;
-}
-
-.Button.flat.dark {
-  color: #eee;
-}
-
-.Button.flat:hover,
-.Button.flat:focus {
-  background-color: rgba(153, 153, 153, 0.2);
-}
-
-.Button.flat:active {
-  background-color: rgba(153, 153, 153, 0.4);
-}
-
-/**
- * Raised button
- */
-
-.Button.raised {
-  background-color: #2196f3;
-  color: #eee;
-}
-
-.Button.raised:hover,
-.Button.raised:focus {
-  background-color: #38a0f5;
-}
-
-.Button.raised:active {
-  background-color: #51abf6;
-}
diff --git a/static/css/components/PathSelector.css b/static/css/components/PathSelector.css
deleted file mode 100644
index 7ca86d68..00000000
--- a/static/css/components/PathSelector.css
+++ /dev/null
@@ -1,17 +0,0 @@
-.PathSelector {
-  align-items: center;
-  display: flex;
-  width: 100%;
-}
-
-.PathSelector .label {
-  margin-right: 10px;
-  flex: 1 1 auto;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-.PathSelector .input {
-  flex: 5 5 200px;
-}
diff --git a/static/css/components/TextInput.css b/static/css/components/TextInput.css
deleted file mode 100644
index 7289a314..00000000
--- a/static/css/components/TextInput.css
+++ /dev/null
@@ -1,18 +0,0 @@
-.TextInput {
-  background: rgba(255, 255, 255, 0.8);
-  border-radius: 3px;
-  font-size: 14px;
-  outline: none;
-  padding: 3px 6px;
-  width: 200px;
-  -webkit-app-region: no-drag;
-  cursor: default;
-}
-
-.TextInput.light {
-  border: 1px solid rgba(0, 0, 0, 0.4);
-}
-
-.TextInput.dark {
-  border: 1px solid rgba(0, 0, 0, 0.8);
-}
diff --git a/static/css/pages/PreferencesPage.css b/static/css/pages/PreferencesPage.css
deleted file mode 100644
index 28405ba7..00000000
--- a/static/css/pages/PreferencesPage.css
+++ /dev/null
@@ -1,17 +0,0 @@
-.PreferencesPage {
-  color: rgba(255, 255, 255, 0.6);
-  margin: 0 20px;
-}
-
-.PreferencesSection:not(:last-child) {
-  margin-top: 20px;
-  margin-bottom: 40px;
-}
-
-.PreferencesSection .title {
-  color: rgba(255, 255, 255, 0.9);
-}
-
-.Preference:not(:last-child) {
-  margin-bottom: 10px;
-}
diff --git a/static/css/main.css b/static/main.css
similarity index 97%
rename from static/css/main.css
rename to static/main.css
index 8e97f5e3..36959f3b 100644
--- a/static/css/main.css
+++ b/static/main.css
@@ -20,7 +20,7 @@ body {
 }
 
 .app {
-  color: #FFF;
+  color: #FAFAFA; /* grey50 */
   font-family: BlinkMacSystemFont, 'Helvetica Neue', Helvetica, sans-serif;
   font-size: 14px;
   line-height: 1.5em;
@@ -91,9 +91,7 @@ table {
   font-family: 'Material Icons';
   font-style: normal;
   font-weight: 400;
-  src: local('Material Icons'),
-       local('MaterialIcons-Regular'),
-       url('../MaterialIcons-Regular.woff2') format('woff2');
+  src: url('MaterialIcons-Regular.woff2') format('woff2');
 }
 
 .icon {
@@ -1025,3 +1023,19 @@ video::-webkit-media-text-track-container {
   height: 32px;
   margin: 4px 0 0 4px;
 }
+
+/**
+ * Use this class on Material UI components to get correct native app behavior:
+ *
+ * - Dragging the button should NOT drag the entire app window
+ * - The cursor should be default, not a pointer (hand) like on the web
+ */
+
+.control {
+  -webkit-app-region: no-drag;
+  cursor: default !important;
+}
+
+.control * {
+  cursor: default !important;
+}
diff --git a/static/main.html b/static/main.html
index 9399e248..702d5f3e 100644
--- a/static/main.html
+++ b/static/main.html
@@ -3,22 +3,11 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
-
     <title>WebTorrent Desktop</title>
-
-    <link rel="stylesheet" href="css/components/Button.css">
-    <link rel="stylesheet" href="css/components/PathSelector.css">
-    <link rel="stylesheet" href="css/components/TextInput.css">
-    <link rel="stylesheet" href="css/pages/PreferencesPage.css">
-
-    <link rel="stylesheet" href="css/main.css">
+    <link rel="stylesheet" href="main.css">
   </head>
   <body>
-    <!-- React prints a warning if you render to <body> directly -->
     <div id='body'></div>
-    <!-- We can't just say src='...main.js', that breaks require()s -->
-    <script>
-      require('../build/renderer/main.js')
-    </script>
+    <script>require('../build/renderer/main.js')</script>
   </body>
 </html>