#1
Whats the proper way to plug a laptop into mixer into a pa system? We are playing prerecorded guitar parts if that matters. thanks!
#2
There are many ways to accomplish that and it really depends on the mixer and what interface (if you have one) you are using. Generally I just either use the CD in on my Mackie when playing from an iPod/iPhone (don't use the earphone jack, but the convertor adaptor that plugs in the botton) or if I have the full iMac (or any computer) it goes through the M-Audio Fastrack Pro outputs into a stereo (two channel) fader on my mixer. Try to avoid using headphone or earphone jacks into mixers, it is not a line out and can sound like crap.

The big trick is how do you synchronize everything to your recorded track and control it.