No official MAME release has ever required a file named exactly that. The term likely originated from a misreading of MAME’s internal debug logs or a fake “exclusive” pack shared on shady forums.
: Copy qsound_hle.zip directly into your main ROMs folder . If you use subdirectories for different platforms or genres, you may need to copy it into each specific folder containing games that require it. qsoundhlezip mame exclusive