It's broken. Demo volume reverts "automatically" to 2. Of course I can turn up volume in Windows or in my headphone amplifier. But demo volume DID work a few versions ago, and now it DOESN'T work any longer.

The only solution I know is to turn up volume A LOT, then reduce volume about 12 or 15dB in the main mixer (because in normal mode Band in a Box volume is normal).

An alternative solution that someone suggested was to change the demo volume from 2 to 5 or 6 every time you audition a style... of course this is not practical.