BEDOUIN  I own an MPC 500, that with the latest OS installed, can work with Chop Shop files. I moved from Reason / Recycle to an MPC recently and this program is great for getting files into it. So far so good. If you have an MPC 500 that lacks Chop Shop this can come in real handy, and put you on par with your MPC 1000 and 2500 owning colleagues.   
(Version 1.2)