Dewd! The triple screen Matrox adapter setup is awesome Franco! Kinda jellyous!
I remember years ago when it first came out, I just hope the support for it is better now. At least I've gone wide screen now on my setup at home at a nice high rez. I'm pretty happy with it right now since I've setup Freelancer for the rez with wide screen support/adjustment. I have no clue if Freelancer can even work with a multiple monitor setup, I think that question can best be asked to OP and if he can even add support for it as I doubt MS implemented it into the game.
Yes, the Logitech 5.1 setup I too have at the house is awesome for gaming, however due to issues with the 3D sound in Freelancer, it's best to leave it disabled as per Microsoft's suggestions to solve various stability issues. I will have to try to re-enable it sometime after Crossfire 1.8 leaves beta and see if it's stable enough to use on my computer.
As for your controls Franco, I think that all depends on if it's supported by MS (the appropriate drivers) and can be mapped(or even recognized) to certain controls in Freelancer. Playing Freelancer with a joystick is tricky as it's orignally programmed with a mouse and keyboard in mind. But perhaps with the proper tweaking, setup and training yourself to adjust to the new controls, I'm sure it can be done. There will be some quirks mind you, such as z pitch rolls(barrel rolls) are only used while out of mouse flight mode, i.e. cruise/autopilot mode, which will effectively make your foot pedals of little use. Not sure what the yoke controls, but the throttle and joystick will most likely be able to be applied to it, as I have a nice Saitek flightstick myself that works well for flight based games.(and even games like Mechwarrior 4, my favorite to use that stick with)
Anyway, you've got an awesome setup there Franco, however I'm afraid it may be overkill or worthless for the most part for Freelancer due to it's own set of issues sadly. Best of fortune to you with getting it to work like you want in Freelancer though!