It has taken quite a while, but now the latest Burn (0.3.5) is out. It does not offer real new features, but instead the already existing ones have been augmented. Also the usability has improved a lot.
Burn has shrunk due to the fact that a lot of functionality has now gone to CDPlayer to concentrate Burn really to what it is meant for: burning CDs. Thus, you need the latest CDPlayer package, too.
Have fun. Feedback welcome.