With 2.2 and Voice Actions, you are supposed to be able to say "Play The Beatles".
But what I find is it only will find it via a streaming site, and will not play any music that way that is installed on the phone.
I have since found another post that in fact indcates GVA will not work the way I am asking.
Seems ridiculous. First place it should look is locally.
But maybe some day...