I had iOS5 on my iPhone for a few days, after I saw how well it worked, I also installed it on my iPad, but apparently, there's a bug with the musics app, I can't play any of the songs I've bought from iTunes, I can only play the ones I've ripped off the internet which is a very small number of songs, the songs just play for a second and then stop! I read somewhere about this being because of soundcheck but I've tried turning it off with no results, however, it will work if I continually (and rapidly) tap the sound check on/off button, which isn't very convenient.
I wanted to now if anyone else has this problem and if you have a fix for it? please help!