repeat song

Conflicts:
	Android_Workspace/ece381/res/layout/activity_song.xml
	Android_Workspace/ece381/src/com/example/ece381/SongActivity.java
	Android_Workspace/ece381/src/com/example/ece381/messages.properties
	Android_Workspace/ece381/src/com/example/ece381/play.java
Fix some problem, however, seekbar won't update if repeat is turned on