I don't have any demo MP3's as the thing never worked long enough for me to record anything. One of the main problems was the it kept resetting itself or the keyboard would just freeze including whatever notes you were playing. I think I had it for about a month and it was the top of the range 76 note one fully expanded with the full memory available.
As for pictures I did take some video evidence with my camera of the defective unit just in case I needed proof to get my money back should things have turned nasty, which I'm pleased to say they didn't. Doubt I still have these plus the files would be huge to post anyway.