How do I play MP3 audio files in Game Maker?
Just add them as any other sound resource. When adding MP3 files to games in Game Maker versions prior to 4.2, you will have to select the file filter “All files” in the Load Sound dialog in order to be able to select MP3 files. In GM version 4.2 the MP3 files are added to the normal sound files filter. NOTE: There are problams playing MP3 files on some systems. I do not know why.