I was thinking, I would probably would have switched to Linux full time a while back if N-Track was available for it. What do you guys think? I guess it’s a lot to ask since it’s not even available for Macs.
Rosegarden
http://www.rosegardenmusic.com/
Ardour
http://ardour.org/
Wired
http://wired.is.free.fr/
Audacity
http://audacity.sourceforge.net/
and on and on it goes …
I just recently brought ntrack, however I am on the verge of moving to linux, and that will mean no more ntrack, but linux has some fine replacements, free too 
Some distro’s install Rosegarden by default, just need to upgrade to the latest version, darn fine program.
Maybe n-track might work within the mono project on linux. My guess, it could be driver #### though.
http://www.mono-project.com
I also use linux on my main-non-recording machine. I’m not too familiar with emulation software… but I’m wondering if EM programs like WINE would work… a bigger hurdle is drivers for my input devices!
Sounds like a new project for Flavio? Port me please!
I have tried ardour several times. Rock solid recording with my C-Port 10X10 card (envy24 chip) under linux DeMuDi (Debian Multimedia distribution). The VST compatablity and midi not so great yet however.
A port to *nix is pretty unlikely seeing that the application is written in .NET. If it were C or old school VB, maybe. But WINE does not support .NET so far as I know.