Place the ZIP file directly into your MAME roms folder. Do not extract it. Why This Matters
Historically, MAME used a file named qsound.bin . However, as emulation became more accurate, developers moved to the dump. This change necessitated a new zip file structure in the ROMs folder to avoid breaking older game sets. The "Fix": Step-by-Step Resolution dl1425bin+qsoundhle+fix
If you have an older version of the QSound file, you can often manually fix the error: Locate your existing qsound.zip . Place the ZIP file directly into your MAME roms folder