Android's quickly becoming the elephant in the room for Sling Media, so we're delighted to hear today that the promised Android client of SlingPlayer Mobile is apparently entering a private beta period as we speak -- according to a tipster over at Phandroid, anyhow. It seems that some members that signed up to Sling's beta program have been contacted recently with a link to the download and a request that they not discuss the app or the beta program (so much for that), so if everything goes really, really well, we might see a release before too long. The thought of this thing running on the