Because these files contain copyrighted code from Capcom, they are not bundled with the MAME executable. They must be sourced from reputable ROM archives: The Internet Archive

Ensure the file is named exactly qsound_hle.zip . If you only have an older file named qsound.zip , you can often copy and rename it to qsound_hle.zip to satisfy the emulator's requirements. Common Issues and Troubleshooting

This led to the proliferation of "sample packs" or specific zip files that users had to hunt down on forums and shady file-hosting sites to complete their emulation experience. The file "qsound.zip" or "qsound-hle.zip" became the Holy Grail for restoring the authentic arcade audio experience.

Setting it up is simple, but it must be done precisely for the emulator to recognize it: