A while back I bought an iriver T10 music player. For the next months, I had to use gPhoto to upload audio files from Linux to the T10. Only because someone decided to use Microsoft's Media Transfer Protocol (MTP), instead of the good old USB Mass Storage protocol (UMS).

My gPhoto setup broke when I upgraded to Fedora Core 6, so I searched around, and found that iriver had released new firmware to replace MTP with UMS. The firmware updater requires Windows to run, but after using it, I finally can access the T10 like any other USB storage device under Linux.