The original MP3.com (based in San Diego, CA before being acquired in 2003) allowed artists on the site to create CDs from material they had uploaded to the site. These were then available for purchase via the site as D.A.M. (Digital Automatic Music) CD-Rs and included printed labels and art. If they chose to, artists could limit the time a D.A.M. CD-R was available. Once the site was shut down and sold, all releases became unavailable.
This page documents all the bands back then which put their music out onto a CD through this method.