Not sure if this is the right for this, but please forgive me if it isn't. I'm having problems with my ipod, the 20 gig unit. Several songs that were playable before, now will not play. If I go to one of these songs it gets stuck for a few seconds and then just stops. A second problem is that the song will start playing and then just skip to the next song. Or it sounds like a fast forward button has been hit and it is skipping through the song. Again these songs used to play perfectly. Any help will be appreciated! Thanks!