I suppose JoyGP wouldn't do anything for you if you asked them to recode the game to your new GP somehow?
I remember, one of the few emulators I've actually 'bought', MagicEngine for Windows, I payed for that. And then when I got a new computer I had to contact them and get a new key to get M.E. working on my new PC. They simply looked up my records, saw I had indeed paid for it, and gladly sent me a new key.
Obviously I could have misused that to go and pass M.E. around, but then of course they would catch on when I'm asking for like my 100th key
Surely JoyGP could do something similiar? And anyways, how do you download something onto your PC and it's already encrypted to your GP? It goes onto your PC first, and then onto your GP, correct? How would the copy on your PC become encrypted and keep you from putting it on other SMC's and playing in other GP's?