I know I can probably figure this out on my own, but my iPad is currently doing what I bed ATV to do which is access iTunes and play through an old receiver to deck/pool speakers. I want to be able to control from my phone. So I was thinking save a few bucks, get a used ATV1 since is has RCA outputs. Old receiver does not have an optical input. After a brief look on ebay looks like ATV 1s are all being sold jailbroken. Will ATV1 serve my need of using the remote app to change tunes? Or should I just buy the ATV3 and an adaptor?