For my Wolfenstein 3D port 'Wolfenduino', I ripped the PC speaker sound resources from the original game and converted them into the Gamebuino sound pattern format. My game doesn't have enough program space to fit them all in, but I thought it would be nice to share them with the community so that other people could use them in their games!
Here is a simple Arduino sketch in the Wolfenduino repository that you can try out:
https://github.com/jhhoward/Wolfenduino ... /SoundTest(The actual sound patterns are in Data_Audio.h)
Potentially it would be possible to convert audio from other id / Apogee games (e.g. Commander Keen) as they use the same format. My audio formatting tool which converts from the id format to Gamebuino can be found here:
https://github.com/jhhoward/Wolfenduino ... dioEncoder