I know it happened in the beta version before this current one. But I don't think he tried the game that was compiled in any earlier 3.4.1 builds. He had tried it under the the 3.4.0 compiled version, with no sound/music issues, though.
I don't think it makes a difference what kind of sound file it is (ogg, wav, mp3), because he was getting a pop-up message when running the game from winsetup, regardless of which combination of audios settings he selected. He had to change it to the "no Music" and "no Sound" winsetup options to prevent that message from appearing every time he launches the game. I know he's running Windows 10 now, but may have previously been running Windows 7 when it last worked. I thought it may have been a windows 10 incompatibility/driver issue with his on-board sound card, but that doesn't explain why old (3.4.0 and earlier) AGS games still work on his system with full sound and music...