ok so I have purchased two songs from the itouch music store. The first one worked for a while then it stoped working. If I try to ply the song it freezes up the music app and I can't play a song until I reset my iPod. Now I can't preview any songs in the store and when I downloaded the second one the same thing happened. The songs work when I transfer them to my computer but that's it. Anyone else have this problem?