You've added audio to a course and deployed to CD-Rom. When playing the course through the player.html file, everything sounds normal. But if you play through the .exe (or .hqx on mac) files your audio files are either sped up or play really slow.
The issue stems from your audio file sample rate. The sample rate on your audio files must be 44.100 kHz in order to play correctly through the .exe or .hqx applications.