Interestingly, these two files are often identical. If you are missing qsound_hle.zip but have qsound.zip , you can simply copy and rename it to resolve "missing file" errors in your arcade auditor. 🕹️ Why You Need It
If you are trying to play CPS-2 games and you get an error saying "qsound_hle.rom NOT FOUND,"
The qsound_hle.zip file is a crucial "BIOS" or device ROM for modern MAME builds (specifically since version 0.201), required to emulate the audio processor used in Capcom Play System 2 (CPS2) and ZN games. The Evolution of QSound in MAME
Here is a quick guide on what this file is, why you need it, and how to fix your arcade setup. What is qsound_hle.zip? Starting with MAME version 0.201