They say a picture is worth a thousand words. Not sure how many a video is worth, but watch (and listen to) this demo, it is quite impressive!!
As you can see, all guitar tracks came from Guitarix. They are mono tracks, which are then routed into the JACK audio server, which in turn can patch them through to Ardour track inputs. All the recording was done in Ardour, apparently.
I am yet to try Guitarix myself, but wanted to share it over here because I think it is a great tool for all of us doing Audio production in Linux. Should you want to install it, please follow the instructions from the official site. In the case of Ubuntu/Ubuntu Studio, instructions are simple:
1.- Add the Guitarix repository:
sudo add-apt-repository ppa:falk-t-j/lucid
2.- Update your sources:
sudo apt-get update
3.- Install Guitarix
sudo apt-get install guitarix
If you do install it or have done so already, please share your experience by posting a comment here!
Thanks for reading