MP3 players

I just got DSL and discovered napster and so I was thinking how cool it would be to have an mp3 player with all my favorite songs downloaded on it and set it on random play and just kick back. Who would need a tuner? It should sound at least as good if not better and no commercials just my favorite music all the time and free. I just downloaded some brittany spears, googoo dolls and, queen stuff in just a couple of minutes.( Hey I just realised I could have done it all simultaneously and it would have been faster). So does anybody know of a good player and do they have a digital output? Does anyone even make a rack mount type player or just cheap portable ones? And where can I buy it? Thanks.