I have recently copied over some audio books to my 30 GB Creative Zen Jukebox. As these are only speech they have been encoded at a very low bit rate IE 32 kbps. I did not produce these myself. These play fine my laptop and seem to be okay streaming to my Netgear MP101 digital music player. But when listened to on the Zen Jukebox, the play at what appears to be half speed. It sounds like a 45 RPM single playing at 33 1/3. Has anyone else experience this? Is it the firmware on the player? Would an upgrade help at all?