Flexing their journalistic muscles, the crew at Joystiq have details surrounding Last.fm’s arrival onto Xbox Live, which was announced at E3 this year. It shouldn’t come as a surprise by now, but Gold members will have 24-hour access to the service that’s ad supported for free.

Silver members will have access to the streaming music service laden with video adverts for three hours a month as a “trial”, says Christina DeRosa, XBL GM. For an additional $36/year you’re privy to Last.fm’s service sans adverts and the like.

“Silver users will be able access what we’re considering a trial period of three hours a month, which comes with video advertising. Gold users will have unlimited ad-supported access, so they can use it 24 hours a day. There will also be a premium offering on a subscription basis from Last.fm, that will be commercial free and will also have more sophisticated personalization features, like Loved Tracks.”