I found Songcast to be the fastest and easiest way for a new artist to get on iTunes, Amazon, eMusic, and Napster in one smooth move.

You could do it yourself, but not cost effectively if you make more than $8 an hour. It took me nearly an hour to set up Amazon alone. In the same time I could have set up my Songcast account and launched the album. The beauty is you get one place to handle all your digital music distribution. It's worth the $20 an album or $10 a single to me if I can avoid the time consuming misery of keying this garbage into all the different programs. And, you still get your entire royalty.