fix for bug

web/app/assets/javascripts/react-components/mixins/ICheckMixin.js.coffee

@@ -10,48 +10,55 @@ teacherActions = window.JK.Actions.Teacher
     @setCheckboxState()
     @enableICheck()
 
+  setSingleCheckbox: (checkbox) ->
+    selector = checkbox.selector
+
+    if checkbox.stateKey?
+      choice = @state[checkbox.stateKey]
+    else
+      choice = @props[checkbox.propsKey]
+
+    $candidate = @root.find(selector)
+
+
+    @iCheckIgnore = true
+
+    if $candidate.attr('type') == 'radio'
+      if choice?
+        $found = @root.find(selector + '[value="' + choice + '"]')
+        $found.iCheck('check').attr('checked', true)
+      else
+        $candidate.iCheck('uncheck').attr('checked', false)
+    else
+      if choice
+        $candidate.iCheck('check').attr('checked', true);
+      else
+        $candidate.iCheck('uncheck').attr('checked', false);
+    @iCheckIgnore = false
+
   setCheckboxState: () ->
-    for checkbox in @checkboxes
-      selector = checkbox.selector
+    for checkbox in this.checkboxes
+      @setSingleCheckbox(checkbox)
 
-      if checkbox.stateKey?
-        choice = @state[checkbox.stateKey]
-      else
-        choice = @props[checkbox.propsKey]
+  enableSingle: (checkbox) ->
+    selector = checkbox.selector
 
-      $candidate = @root.find(selector)
+    checkBoxes = @root.find(selector + '[type="checkbox"]')
+    if checkBoxes.length > 0
+      context.JK.checkbox(checkBoxes)
+      checkBoxes.on('ifChanged', (e) => @checkIfCanFire(e))
+    radioBoxes = @root.find(selector + '[type="radio"]')
+    if radioBoxes.length > 0
+      context.JK.checkbox(radioBoxes)
+      radioBoxes.on('ifChanged', (e) => @checkIfCanFire(e))
 
 
-      @iCheckIgnore = true
-
-      if $candidate.attr('type') == 'radio'
-        if choice?
-          $found = @root.find(selector + '[value="' + choice + '"]')
-          $found.iCheck('check').attr('checked', true)
-        else
-          $candidate.iCheck('uncheck').attr('checked', false)
-      else
-        if choice
-          $candidate.iCheck('check').attr('checked', true);
-        else
-          $candidate.iCheck('uncheck').attr('checked', false);
-      @iCheckIgnore = false
-
   enableICheck: (e) ->
     if !@root?
       return
 
-    for checkbox in @checkboxes
-      selector = checkbox.selector
-
-      checkBoxes = @root.find(selector + '[type="checkbox"]')
-      if checkBoxes.length > 0
-        context.JK.checkbox(checkBoxes)
-        checkBoxes.on('ifChanged', (e) => @checkIfCanFire(e))
-      radioBoxes = @root.find(selector + '[type="radio"]')
-      if radioBoxes.length > 0
-        context.JK.checkbox(radioBoxes)
-        radioBoxes.on('ifChanged', (e) => @checkIfCanFire(e))
+    for checkbox in this.checkboxes
+      @enableSingle(checkbox)
 
     true
 

web/app/assets/javascripts/react-components/stores/JamBlasterStore.js.coffee

@@ -28,7 +28,7 @@ logger = context.JK.logger
 
       if @pairedJamBlaster? && @pairedJamBlaster.tracks?
         logger.debug("onUpdateAudio name=#{name} value=#{value}", @pairedJamBlaster.tracks)
-        audio = jQuery({}, @pairedJamBlaster.tracks)
+        audio = $.extend({}, @pairedJamBlaster.tracks)
         if name == 'inputTypeTrack1'
           audio.input1_linemode = value
         else if name == 'inputTypeTrack2'
@@ -52,8 +52,8 @@ logger = context.JK.logger
         if name == 'combined'
           combined = value
 
-        track1Instrument = audio.track1Instrument
-        track2Instrument = audio.track2Instrument
+        track1Instrument = @pairedJamBlaster.tracks.track1Instrument
+        track2Instrument = @pairedJamBlaster.tracks.track2Instrument
         if name == 'track1Instrument'
           track1Instrument = @convertToClientInstrument(value)
         if name == 'track2Instrument'