SketchEtch

I am a comedian and I am jumping head first into the MiniDisc world today. I am picking up a Hi-MD MZ-NHF800 later today as i have researched and believe it will do everything I need it to. I will be recording comedy shows through the house system at various comedy clubs. My questions is how do I do this? Some house systems have a line out of their system I can use, and some have a headphone out I can use. What's the difference? Do I use the line in or mic in on the MD unit? What's the difference? I will also be experimenting with recording with a lapel mic I picked up, but this isn't crucial right now. Once someone answers my line out/headphone out and line in/mic in questons, I think I will be good to go. From what I understand, I should record is PCM mode which is the best quality, then play the files through USB using SoundStage and capture them using Total Recorder or some other program (recommendations? is anything free?) and then I can edit the .wav file freely. Is all of this correct? What good audio editing programs do you recommend? My goal is to make an audio CD worthy of selling. Thanks for all your help in advance!