That sucks. I worked for some music software company for a while, and we all had Mac Minis. All of the dev was done against them, including ripping tests, and we all know how testing goes. Oddly, the only Mini that died was the one that belonged to the store manager guy, who never used it.
I've probably got a working SuperDrive or at least a ComboDrive from a Powerbook laying around if you want it. The swap isn't that hard on the Mini, just need a small Phillips (not Lisa lol) and a putty knife. Lemme know.