Looking to Collaborate on an MP3 player

Hey - I posted yesterday or the day before I think with a PureVolume style MP3 player, and I took the player / code much further. But, there’s some bugs I still don’t understand, and some functions I can’t work out in my mind. If someone wants to collaborate on this with me , I’d love them forever. I integrated a marquee style thing, to display whats going on, or the song name / artist. And I updated how the play / load bar works. I didn’t even start on the Pause function, and the Previous and Next Song functions are still whack. Let me know what you think of the whole thing so far, and if anyone wants to help optimize / bang this code into shape. Thanks.

See The Player HERE

Source Files