THis baffles me, I'm new to recording, I just finished a local Tools Class here in New York...they tech you all about protools and how it works and how to record with it...but they never get into cabling and stuff...so lets say have a Amp that I'm recording downt he hall, or musicians two rooms away that need headphone mixes. How do you run the cables ? do you need like some sort of relay, to boost the signal over a cable that long, or are there extention cables? I"m seriouly confused, Please help, I have a singer coming over next week, and she will be 3 rooms down the hall...what do I do? Thanks