Legacynth

https://www.macrelics.com/legacynth/

Legacynth is a reimplementation of Apple’s Sound Driver API for PowerPC Macs and AV Macs running classic Mac OS.

Legacynth Server icon: A speaker emitting sound, with a plug on a wire dangling behind it, resting on a serving tray supported by a hand underneath.
Legacynth
Legacynth Extension icon: A speaker emitting sound, with a plug on a wire dangling behind it, set against a light-gray puzzle piece backdrop.
Legacynth Extension

The initial release implements the Sound Driver’s free-form (i.e. sampled sound) synthesizer.

Legacynth is stopped. Legacynth is started. Legacynth is playing.
Legacynth's main window.

Games that are missing sampled sounds because Apple’s .Sound driver no longer plays them will get them back with Legacynth.

NetTrek 3 icon: A spaceship resembling the NASA space shuttle orbiter, plugged into a LocalTalk network, against a backdrop of stars and planets.
NetTrek

Download the installer.