I've posted a release candidate for Boomer today, and you can download it from the files area. This release candidate includes USB support, and fixes for some critical bugs, so if you installed the beta, please upgrade.
There are still some known issues, but we believe we're quickly closing to being ready to integrate in Build 115.
Bugs should be reported using the Bugster category development/audio-ng/software. Alternatively, you can send mail to firstname.lastname@example.org.