Party Mix Required

I have a list of songs (about six hours worth) that I would like mixed so that I can play it at my party. The music is various styles (dance, ebm, pop, metal) and I appreciate that some of the music styles don't mix well, but I don't want a playlist where everyone is standing around waiting for the next song to start. I can provide all the tracks in MP3 format, and I'd like it done in the next four weeks if possible. Thanks for your time, and I hope to hear from you soon.