Downloaded a gigs worth of content already, must still check if it's on my usb or the console I downloaded on 
If you downloaded to the local 360's HDD, just go to System>Memory>Storage>HDD then choose the items you want, and move them.
I think there's even a single-button shortcut which will allow you to select a number of items, then copy them all at once, if you've got a lot of stuff.
Just frequency and some other indies I bought a while back. some avatar stuff.
Thanks for all the help guys, going to transfer tomorrow :3
Good luck with that.
XBLA titles are tied by DRM to both (a) the GamerTag which purchased them and (b) the console on which they were originally downloaded.
If BOTH match, they can be played without an internet connection; there is no need to log-in to Xbox Live.
If you take that XBLA title to a machine other than the one on which it was originally downloaded, it will require that you log-in to Xbox Live in order to play.
Perhaps I am mistaken, but I recall your Xbox is blocked from Live login due to some shenanigans, so I think you may experience problems.