There is still a bug here. Even though the 5 sec rule works and you can leave the song and come back to see the play count change, it only works one time.

Example:

play 5 secs of song.
hit the back and start again for 5 secs.
hit back again and play for 5 secs.
change songs and come back to original song. Play count only increments 1 instead of 3.