Go to mame.ini (the main configuration file). Find the lines:
| Game Title | MAME Driver | Requires QSound? | | :--- | :--- | :--- | | Street Fighter Alpha 3 | cps2 | | | Marvel vs. Capcom | cps2 | Yes | | Dungeons & Dragons: Shadow over Mystara | cps2 | Yes | | Eco Fighters | cps2 | Yes | | 1944: The Loop Master | cps2 | Yes | | Mega Man: The Power Battle | cps2 | Yes | | Alien vs. Predator | cps2 | Yes | | Progear (Cave) | cps2 | Yes | | Note: CPS-1 games like original Street Fighter II (World Warrior) | cps1 | No (uses discrete DAC) | qsound-hle.zip mame
Then, something brilliant happened.