If it is running a version of System 7 you can make the sound a System 7 Sound file and it'll play just fine. My Mac Plus with 7.0.1 plays the theme from Ms. Pacman upon startup.
"SoundApp" on a QuickTime 3+ capable Mac should be able to make System 7 Sound files for you. I think there is a version of SoundApp (<2.0 I think) that will work on a Plus, and therefore a Classic, to play AIFFs and etc.
"SoundApp" on a QuickTime 3+ capable Mac should be able to make System 7 Sound files for you. I think there is a version of SoundApp (<2.0 I think) that will work on a Plus, and therefore a Classic, to play AIFFs and etc.