v1.2 update to MobileMe iDisk that Apple pushed out last month has a secret -- er, did have a secret. One of the concealed new features of the app is background streaming, or as Apple puts it, the ability to "play audio from your iDisk while using another app." For starters, it's pretty fantastic just to have this functionality in-hand for your own garage jams, but what's more is that any licensed music on your iDisk still streams perfectly fine. Only time will tell if any record labels (or that mean, mean RIAA) step forward with a grievance, but this could very well be the beginning of iTunes in the cloud. Or a reason for buying Lala. Or a mysterious combination of the two.