http://www.geocities.com/frequency_wave/ Here are a few CDRs I've made. I hope some people find them useful. They're great for speaker phase rotation and audio equipment calibration. Burn your own frequency CDR from 1Hz to 22kHz either sine wave or square wave. Remember, all files are actually .ACE compressed (WinAce). You must rename the .ACE.ZIP extensions to .ACE. Geocities does not support .ACE files, that's why they had to be named .zip.