Recently my iPod classic has been having this weird problem where it won't play some songs that work perfectly fine in iTunes on my MBP that it's synced with. It's only been happening for the last 2 or 3 months, and only with songs I've added in this time. When I attempt to play these songs, the iPod will show the songs information like any other song, and then just skip to the next song in the list without playing it. It's always the same songs too, so it's not like a random problem that affects different songs each time. I've tried completely removing the songs from my iTunes library, syncing the iPod without the offending songs, and then re-adding the song and syncing the iPod again attempting to force the iPod to re-sync the song in case there was a problem when it originally synced, but that doesn't work either. Any ideas?