Hello, I use an iPod Classic 160g, it is more than 15 000 songs, about 120 gigs of music, all divided into playlist and it works all perfect, never had a problem with break from music, which happens from time to time is a crash need to reboot again, does not have a constant time, I think it's on the HD, I'm wanting to trade for an iPod flash memory, but new ones have little memory, but here everything is ok.