Hi all..
Yes Sega Mega CD games with Wav/mp3 don’t work (no music)so I had to covert them to bin and they work fine,all you have to do is copy the files (iso/bin and wav/mp3 to a cdrw disc,if it don’t have a cue file use Sega Cue maker for windows.Then copy it back to a bin image file using ImgBurn,I am on Linux so I used a Virtual Machine Windows 7 to do it..
Hope this helps.