There are lots of breakbreats and samples on internet (WAV format) for download. Nevertheless, only a few can be loaded into the MPC 2000. The message on the screen is "Unknown file format". Last time I tried to load thirty WAV format samples into the MPC 2000 and only six of them could be loaded. I guess it's not a source problem, because the thirty samples were picked from the same site. I've had this problem since I tried this six months ago with version 1.5. Now, with version 1.7 I've got the same problem. I spend hours downloading great breakbeats and samples, but then the MPC goes too choosy and let me work with a tiny percentage. Does anybody know something about different WAV formats, or what kind of WAV files does the MPC 2000 support? Help!