Here's a fun trick than anyone with an Intel-class machine, 6GHz or below can try!
Want to make your MP3s have that cool "Max Headroom" effect?
While playing your MP3s, do some task that is even mildly CPU or I/O intensive. It's as simple as that! Wow -- listen to that distortion and "echo". And to think that real recording studios pay big money to make effects like this!