I've had my rizone for a couple of months now and everything seems ok (probably famous last words!) With regards to the video playback, I had the "invalid file format" frustration. My seller recommended using the wmv format, which so far works. I've converted flv and avi files,although a couple needed the frame rate changing as they looked like they were on fast forward! It's annoying that the player is advertised as being able to play a number of formats when it clearly can't, but as least I can now playing something!
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