I have been noticing this on my ipod touch. Some music I bring over to it ends up having issues by what looks like random parts of the song, it will stop any audio and then the IPOD just goes to another song. So say this occurs at 2:44 in the song, at 2:45 if I move the slider bar it will play the rest, but if it hits 2:44 sound shuts off until it goes to another song. I know its not the song because I played it in Itunes and it was fine. I also then deleted the song from my Ipod, and re transfered it now for this one song it doesn't do it anymore. If Anyone else has this issue, please let me know and if there is a solution. And yes this is jailbroken so if you know of any apps that could cause this issue (which I doubt its that) let me know Thanks.