User blog comment:Lemoness/How to change CSO's game musics/@comment-3182180-20120115035423/@comment-4665345-20120115065344

Because Goldsource engine can only play 44100Hz sounds. Use goldwave to change the audio sample. Yeah, after the update, music will be changed back to normal. That's why theres a "Copy and Paste" in one of the steps shown.