Checked with RoadKings and did not work as expected, either. Tried with latest pinmame v3.2 minimal install from sourceforge.
both wavs 1-2kb size.
- start pinmame
- select roadkings and start
- press F4 for sound command mode
- press del
- enter 0000000008 (sound fx command 0x0008, duration ca. 2sec)
Did I do some