Only use if USB7M-BW was purchased before 5/9/2018*
IMPORTANT: This legacy software can only be installed on Windows 7 or earlier computers
USB2M, USB5M, USB6M, USB7M-SB: PM66 legacy software
* Some windows 7 hardware were sold as closeout items past these dates. **If unsure if you have Windows 10 or Windows 7 hardware, you will get the "check cable" error message when you have windows 7 hardware on the new PM66Q Windows 10 software. So you need to uninstall the PM66Q software and instead install this legacy PM66 that is required for Windows 7 hardware.
Link for GoldWave software used for converting .mp3 files into .WAV files