Stemming from the old thread.

To capture PC Speaker music from DOS games, I have created a modified version of DOSBox (available here + SDL) that logs the data coming to ports $42, $43, and $61, controlling the speaker.

The stdout.txt file from DOSBox can be processed by my other tool, pcsconv. It can be played back there, converted to a simpler textual form, or to DRO from which it can be converted to MIDI by other tools.

You can find some of these soundtracks and more on my channel, SpeakerSoundtracks. 😉