Long sound

hi… I am working on a flash presenation thats going to be a projector. The people wanna use voice with the presentation. Can I record the voice using CoolEdit Pro 2.0 and if I add this sound to flash what would be the best way to compress it so the projector doesn’t crash. Keep in mind this presentation is going to be 3-5 mins so this voiceover is 3-5 mins also complementing the presentaion.