Fm music does not remind digitized real music as in the real game. Is it supposed to be like this? I played the games i told to the real machine but were perfect but also had loud amplifier and that makes the sound stronger and that may was the reason to perform like this. But sound was okay despite using fm chips. But in MAME some games have a lot of poor weird and fuzzy FM music maybe from some FM chips emulation not so good (but not the emulated digitized sound effects and digitized music chips playing together). Let me know if i can do something if it happens only to me.