Right at this moment, a bunch of music fans are sitting in rows at the San Francisco Museum of Modern Art's Wattis Theater, eagerly awaiting the fate of Pandora, the cult-hit semi-customizable Internet radio service. What are they about to hear? That Pandora is teaming up with Sprint and Sonos to get into mobile and household gadgets, and is also introducing a new online interface for the free service. Why should you care? Mobile Net radio has been in the non-existent to sucky range, and a lot of people enjoy Pandora in Web form. At least until Slacker's many promises are realized, this is the biggest step in mobilizing Net radio to date.