I just got my C3000 and a USB enclosure and am planning on using it to play music on my C3000. Spare me the power requirements and "Buy an iPod" remarks please.
I got the USB drive working perfectly and automounting (used instructions from another thread) and I can access it fine. However, the Music Player doesn't list it. It will list a CF card and an SD card, but not the USB drive. The Text Editor, Movie Player, and the Files tab all show it fine, albeit as a Folder and named /dev/sda1.
FYI, I'm mounting it as /mnt/usbhdd.