I’ve had similar difficulties in the past when I was trying to get Netflix working on my Canadian Xbox Live account and once again I encountered it with trying to get the Last.fm application working on my account.
Luckily the trick I used last time served me well once again. It’s pretty much a problem that will plague anyone who’s moved from one country to another while taking their Xbox with them.
If you’ve read my previous post you’ll pretty much be able to figure out how I managed to get the application.
So first you log in with a US Silver account and once you get to the music section you’ll be able to download the Last.fm application. No need to connect it here, although when I first downloaded it allowed 180 minutes or 3hrs worth of trial listening on a Silver account.
Just sign back out of the silver US account and sign back in with the Gold Canadian account and via the Quicklaunch you should be able to see the last.fm either in the all downloads as well as the “recent” tab.
Log in to your last.fm account from there and you’re set to stream your favorite music through your tv or sound system. Hope that helps someone out there.