Well, in case somebody out there is interested, I went ahead with the Slacker option so we can keep the tunes flowing along with the beverages over the Xmas holidays. Slacker premium service was the same price as Napster ($10 per month) and lets me do everything Napster did plus is better suited to exploring new music such as similar artists/songs. Also has a Pandora like 'build a radio station' structure. Seems OK so far. It's not audiophile quality (128kbps MP3 streaming) but will do for casual listening and party background music.
