DiscoApp.com today announced the release of the private beta of Disco for Mac OS 10.4. Disco is a utility for disc burning on your Mac. Utilizing a simple and fun workflow-based interface, users are able to accomplish real burning tasks with minimal effort. Disco also includes a standout feature called Discography, which tracks all of your burns and lets you search through tens of thousands of previously burned files to find out what disc they are on. Disco is expected to be available in the first half of November.