Because Sansa is so super-keen on repackaging their players in different boxes, and sometimes even in different cases, the only real way to tell is to verify the firmware version:
The V1 firmware is named 01.xx.xx, while the V2 firmware begins with 03. This version number can be retrieved under Settings->Info.
I hate to say it but it might have been smart to hang onto the R.
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Oh, I remember you now. Your original player wasn't a real Rhapsody, and you've already had the problem explained to you.