The most common Karaoke format is actually 2 files. There is an mp3 and an accompanying cdg file. When you use video DJ software such as Virtual DJ or PCDJ, you just need to have both files within the same folder. When you use DJ software you can play just a mp3 for music alone or you can select a cdg file to get both the lyrics and the music. CDG is actually the format that comes on most Karaoke CDs. And any good DJ program is able to play from CD or from files on your hard drive. There is even software for converting your Karaoke CDs to MP3+CDG.

Whew. Now that I got through that, I have thousands of files ready for download and I am seeking others who would like to share.