Users of the service can now create free, ad-supported streaming radio stations around a track, an artist or an album as well as access curated stations.

Ads will be served roughly every three tracks - running to 10 seconds if the user is active on the site and 30 seconds if they are inactive. On top of this, they will be allowed up to 50 on-demand track requests a month for free.

We7 CEO Steve Purdham said of the 50-track ...