The most reliable source for verified, updated BIOS sets is the MAME ROM Sets on Archive.org . Look for the latest split or merged sets to find the most current version of qsound.zip or qsound_hle.zip .
The dl-1425.bin file is a digital dump of the internal ROM for the QSound DSP (Digital Signal Processor) found on Capcom Play System (CPS) arcade boards. dl1425bin qsoundzip updated download
To fix the error, you must obtain an updated version of the qsound.zip BIOS file that contains dl-1425.bin (CRC: d6cf5ef5 ). The most reliable source for verified, updated BIOS