As I've written, on the Eee Pc you don't have the room to store your mp3 collection. Sure you could put together a single small playlist, but for all your listening needs, it's better to have it all in the cloud.
Previously I recommended a music site for when I was bored. I posted yesterday of their demise. I found a pretty good article at PC Mag that showed me quite a few sites. I've setted on Finetune. Same function as my previous site, with a rich catalog, just that the paylist need to be long....but I won't complain for the price of free. Here's what I did last night and I hope to make some more once I'm bored again.