With my Rio600, I'm pretty sure i can copy a song to it and on a different computer copy the song back down.

If I understand Rio's position on this, you shouldn't be able to do it with the software Rio provides. Maybe with third-party software, but not "out of the box". That would be the same position the Empeg is in right now.

I don't own a Rio600, so I can't check. Why don't you double-check that one and get back to us?

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Tony Fabris