Well you've got me beat! I just use a Winamp plug-in to auto crossfade my tracks. This is more like radio DJing than club DJing. I just play songs that suit my mood for that night. Taking requests is up to me. You're playing for people sitting at their computers, not people on the dance floor.
One thing I'm digging about it is playing to friends that live to far for me to hang out with thiem in RL. I have a friend in LA that has similar tastes in music, so I play a track here and there for her. Another buddy was online listening and earlier that week he was asking me about some U2 remixes I had. I was able to play a few for him so he could decide if he wanted to buy it or not.
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Brad B.