We announced earlier that we would make the Philips Music Expander available again. This excellent upgrade PCB for your Philips Music Module will turn it into a Panasonic MSX Audio compatible device. With support for the MSX Audio Basic (which you can also use to play FM-PAC basic listings on) and with 256KB sample ram included.
The manual with detailed instructions how to mount the expander PCB in 12 easy steps is now online. Please check the MSX Audio Extension Upgrade Manual v1d