I have a similar problem. Worse, actually. I'm on vacation and trying to access my music on my Pogoplug that's back home via my Android app. No music, using the music part of the app, shows up, but that's been the case for quite a while not. Not sure if that's my fault (mp3 tagging perhaps) or the device. But, while navigating through using the simple explorer type interface to get into my music folder, mp3 files will not download (server error) or stream. However, the few wma files I have stream quickly and flawlessly. FWIW, documents download with no problems or server errors. My initial infatuation with Pogoplug (and corresponding recommendations to friends) are fading fast in the last 6 months as frustrations are beginning to trump usefulness.