I've been looking fro something like this for a LONG time. I hope to use on of these (or similar) in an upcoming project of mine, The DreamDock MP3 dock.
It will be used to read music files from a memory stick, and then they will be played back through speakers built into the dock. The whole thing will be controlled by some touch-screen interface with custom OS.
Thanks for finding this!
-HyperNerd