Burn-in wave files: white noise, pink noise, frequency sweep, channel mix
This site has a lot of audio clips of sounds to use for burn-in (pink/white noise, frequency sweeps, etc...)
Download section for Burninwave generator
That is a program you can download from that website that will do pink noise, white noise, frequency sweeps, and pure tones. You just select the sound you want from the 'Generator' tab, then press play and let it run though your phones (make sure...