This file may be proprietary or discontinued. In that case:
: The most reliable solution is to acquire a "Full Non-Merged" ROM set that matches your specific MAME version, as these include all necessary BIOS and device files automatically. LaunchBox Community Forums you're running or how to check the of your file? mame/src/devices/sound/qsoundhle.cpp at master - GitHub dl 1425bin upd
: If you use an outdated ROM set with a newer version of MAME, you will encounter a "dl-1425.bin NOT FOUND" or "Fatal error: Required files are missing" message. How to Resolve "dl-1425.bin Not Found" This file may be proprietary or discontinued
In older versions of MAME, audio was often handled via High-Level Emulation (HLE), which didn't require this specific binary file. However, as MAME moved toward more accurate Low-Level Emulation (LLE): mame/src/devices/sound/qsoundhle