Some Roms are Incorrect or Possibly Damaged, u Can download it off another Site and it May work Better, The game Raiden was Created back when Overclocking Arcades made em Overheat so it's Settingz were Minimal and the System ran Directly from the Arcade (Your Computer is running at the Speed of the Arcade while Running Windows, any open Applications, or even Online) U can change the Direct Sound (mame w) in the File/Properties, But that just makes the sound Echo....(posted 8209 days ago)There's another Version of Raiden u can Download which has The Settings Changed, I Only have problems With NBA Jam, NBA Hangtime, and Some Fighting games (Most are Neo-Geo) I Just turn off the Sound and Listen 2 Music.... No Matter how Powerfull of a Computer u Have, Mame is a Slow Emulator (When it comes to Large Games) So U'll Still have 2 skip a Few Frames if u Wanna Emulate the game Properly, there's CPS1 and CPS2 Emulators that r More Powerful, I Recommend 500mHz+ and 128RAM+ (And Close all Applications) If u wanna Play the games Without any Problems....