I'm not sure if it's of any help, and it will just add a bit more work to the game, but a Anti-lag
script might be able to help, but im not sure.
Also, if you use .ogg files, as i did, i recommend to convert them to .mp3 as the .ogg files doesn't get "locked" for the install file, so when the players install the game they will be able to get the music files. This is due to what Jens mentioned, that RMXP wasn't made to read .ogg files. It's just a tip if you use it and don't want players to access it