Quoted from sunny_milk:i have been searching for the high speed/rfm soundtrack for a while now but the only thing i could find on youtube is the high speed jackpot song.
https://soundthings.tumblr.com/post/46674111240/m1bridgem1-the-arcade-audio-emulator
Download BridgeM1, M1.dll, and M1.xml file. Get the pinmame ROMs for High Speed.