RealNetworks will unveil a new partnership with a cable operator and an expanded relationship with HP to promote its Rhapsody music service at CES today.

RealNetworks has struck a deal with Cox Communications to provide Cox high-speed Internet subscribers with access to Rhapsody's music, streaming radio and other media services, the company will reveal. It is working with HP to provide easy access to the Rhapsody service on more PCs.

Customers of Cox's high-speed Internet service can sign up for Rhapsody and pay for it within their Cox cable bills, according to RealNetworks. Under the terms of the deal, customers also can access Rhapsody from Windows, Mac or Linux computers without download client software, the company said.

RealNetworks already has a similar deal with Comcast, said RealNetworks spokeswoman Ronda Scott. The new deal with Cox means RealNetworks now is working with two of the top three US cable providers.

The Rhapsody service will also be available on the HP Pavilion, Compaq Presario and HP Pavilion Media Center TV PC lines, according to the company. It will be the default player on these PCs for major audio formats, including RealAudio, Windows Media Audio, AAC (Advanced Audio Coding) and MP3.