I used NBM 0.8.4RC1 to build my bootable flash and upgraded to 10.6.3. Ran NBI 0.8.4RC1 after the update (unnecessary but just for good measure) and still had the sound/bluetooth issues. It's been addressed the there is a flaw with the current releases so it probably won't be resolved until the next release. After using 10.6.2 for a few weeks I haven't encountered any sound or bluetooth issues.
Also, check your PMs by clicking on the "Private Messages" link on the top right of the website under your username.