Xbox 360 owners will be able to access Last.fm to varying degrees whether they have a Gold or Silver account, but full ad-free access will require a premium Last.fm subscription.
That's according to Christina DeRosa from Xbox Live, who told Joystiq that Silver users will get some form of time-limited access with video advertising, while Gold users will get unlimited ad-supported access. DeRosa said Microsoft was considering "a trial period of three hours a month" for Silver users.
Those prepared to pony up for the full shebang, however, will get ad-free access "and will also have more sophisticated personalisation features, like Loved Tracks".
A regular Last.fm account is also free, but a full subscription goes for GBP 3 per month. Microsoft announced at E3 that the service will be introduced along with Twitter and Facebook support this autumn.