I have an ipod touch running jailbroken firmware 2.0.2
Recently I found that any and all of my itune purchases do not play. They show up on all playlists. I can select them and they show that they are playing. The album artworks come up and the counter moves as if the song were playing but no music plays. My other songs that were not purchased on itunes play fine. I have downloaded the songs from both my PC and itouch but regardless of how/ when/ where I purchased them, there is no sound. This problem did not occur immediatly after syncing or purchasing, it was just all of the sudden.