@[WYZ] I have successfully integrated your 6 channel player into MSXgl.
I still have a few things to clean up, but it's already working.
Here is an example with the music of Undertale: http://msxvillage.fr/upload/wyz6ch.rom (requires 2 PSG).
The sound is a bit weird sometimes compared to the WYZ player on PC (especially towards the end of the song).
Is this a known problem?
Do you have this difference too?
I integrated both the 6 channels player AND the 3 channels player (47d version).
The 3 channel music (RA_PSG.wyz music for example) sounds different with the 2 players; with the 6 channel player something sounds strange (as if the notes were not the same or an effect was missing).
