I love my Korg. It's just so good for my playing, I can't praise it enough. Since selling my Roland Cube last year, I felt really lost and almost stopped playing guitar because setting up the PC everytime I wanted to play was just too much.
Anyhoo, so I got my Korg about 3 months ago (or maybe more, I'm not sure) and now I practise daily because I just plug in, stick on my headphones and play along to one of the backing tracks.
I love it so much that I think no guitarist should be without one so I recorded a short sample of me playing over one of the included MIDI backing tracks to "show" you guys how cool it is. Check it out here:
http://gfsa.s3.amazonaws.com/1/doef-doef-jam.mp3
It's a doef-doef backing track, just to be a bit different but, don't worry, the Korg has some metal, some rock, some blues, some funk, some jazz - a little everything for every one ?
Also: tuner, metronome, basic synth, auto wah, different cab selections, different types of distortion (fuzz, high-gain US, overdrive, etc), delay (slap, echo, clear), reverb (very configurable). You can plug it into a PA, headphones, your amp (different settings for different kinds of amps - it compensates)
I love it and I'm CERTAIN I'm not yet using it to its full potential!
Once Ubuntu was set up properly (Ardour, jackd, realtime kernel) it's just a case of plugging the Korg in, starting Ardour (which in turn starts jackd), adding a track, arming, pressing record and jamming along ?
Of course, you can record straight guitar or you can record yourself playing along to the built-in stuff, or you can take the bass out of the built-in stuff and just jam to the drums alone. Quite a lot of options.
So please ignore the recording levels and things, I just plugged and played. Didn't bother with separate tracks or anything.
Enjoy!
http://gfsa.s3.amazonaws.com/1/doef-doef-jam.mp3
PS: That guitar sound was taken from one of the built-in presets (54: NMPLEAD) and modified to suit my tastes. (Lowered the compression, changed the distortion type (from fuzz to high-gain US), removed the reverb, and decreased the noise-reduction -- POWERFUL stuff! ?)