Initializing QSound HLE Core... Mapping DL-1425 memory... Decrypting samples...

MAME 0.139 and earlier used a single qsound.bin . MAME 0.140 through 0.200 used dl-1425.bin and dl-1426.bin . MAME 0.200+ expects a unified qsound-hle.zip with multiple .bin files. Always check your MAME version before troubleshooting.