hantu: I haven't a clue. I've mixed some vocals in the past but usually do a pretty botched up job of it. For a starters you could add a bit of reverb to try and match up the right (?) atmosphere as the track, or anything that fits well with it. I don't use audacity and I don't record. Try doing a search for 'vocal mixing with audacity' or something along those line. Alternatively maybe someone on here who actually records, uses audacity and has more valid experience can help. good luck.
4 days 10 hours 1 minute ago