I just recently set up airplay at my parents house. I got them an Apple TV and a airport express and it works great with their speakers. They love it but was thinking of getting them an ipod touch to use as a remote for both and hopefully use as an ipod. I gave them my original ipod with no color and they can't seem to figure it out I have an iphone 4s and the same set up at my house and love it. I don't want to buy them an iphone because they will never use it enough to justify the data charge. I was wondering if all models of the ipod touch can use the remote app and hopefully get one on craiglist for 100 bucks.