I just so happened to go to the going-out-of-business-sale at Tweeter here in Virginia on Sunday to ask that very question.

Yes, they will sell you the MX-980 remote for a pretty good price.
Yes, they will sell you an MSC-400 for a pretty good price.

No, they will not give you the software to actually use those devices.

The guy who sold it to me however, did give me his home phone number with the offer that for $300 cash he would program it for it. But, still not ever give me the software. I guess since he was about to be laid off he was trying any way he could to make a buck.

This is the real-world model for dealing with this URC remote.

Does anyone know the filename for the expasnion pack so that I can search for that?