I have this problem as well but Apple doesn't seem to care as is exemplified by the fact you have not gotten one single answer to this problem!!!!
I purchased a movie from i-loons and I am forced to wait 2 hours every time I want to watch it!!!!! I have a very slow DSL connection, due to where I live, and there are no faster options available. Is there a way to actually download the movie ONCE to my Crapple TV or Computer so I can ACTUALLY WATCH IT WHEN I WANT?????? If not this is yet another nail in the coffin for that GREEDY, CONTROLLING, NEVER PLAYS NICE WITH OTHERS, ANAL, DICTATORIAL CRUMPANY CALLED APPLE!!!!
Can I download a movie on my Apple TV!!! I don't want to stream it everytime!!!!!! Help!!!
You can download it to iTunes on a computer and it will stream to AppleTV across the LAN using teh Computers icon.
See my reply to steve here: