There have been rumours that the social network will integrate streaming music services (something it already does in Europe with Spotify), but the tech press is expecting this week's announcement to be about Skype-style video chant to expand from its existing instant messaging service.

The music side of things may have to wait. Until the f8 conference, anyway.

While others have tried to weave the social into music - and the cut-price sale of Myspace at the end of last ...