Video recording no crash but can not record twice. Still front camera
pb.
Merge remote-tracking branch 'origin/master'

Conflicts:
	ECML/src/com/ecml/SheetMusicActivity.java
Replay button added and rename buttons in main_top.
Merge remote-tracking branch 'origin/master'

Conflicts:
	ECML/res/layout/main_top.xml
	ECML/src/com/ecml/SheetMusicActivity.java
Reorder code (Audio,Video,Other) and removed unused variables.
Right path for video records.
Fix bug about releasing camera during pauses.
Metronome
bin files
Upside-down Screen rotation.
Stop playback of the audio recording when closing the app.
Stop the metronome when closing the app.
Fix pb playback. Only one playback can start at a time.
Improvment of the metronome.
Suppress "metronome" in the menu.
Youtube search with song title and instrument.
Improvment of Youtube search with instrument.
Add + - button to the speed bar of the MidiPlayer.
Image for + - button of the speed bar.