Mp3 Player Keeps Quitting


Hi Guys
I'm running panther on a g4 powerbook
and use a mp3 player to transfer files between the
mac and a pc. If I leave the mp3 plugged into the mac after a time it quits and I get a warning saying that Ive unplugged a device without quitting it and I may now have corrupted or damaged files. The mp3 when plugged into the pc is fine and I have no problems at all.
I cant say Im great at computers but have a resonable understanding and can find my way round most things
thanks in advance for your help
It sounds like the device is going to sleep or something like that. Can you set the device not to sleep and see if that helps?