I've got nothing constructive to say about internet tough guys and eExperts (as I like to call them). Spend some time on digg and youtube and you'll be convinced all people are as*holes. Shake it off and post your demo's here where we appreciate listening to them
So as far as the track goes, I'm no Jazz expert, but I kinda thought Jazz guitar (and horns) were supposed to sound like noodling? I've listened to Miles Davis and to my ears he's all over the place. I've seen a couple of acoustic Jazz guitarists, including one kinda famous one who basically said he improvises the whole set because thats what Jazz is about. The guy had mega Jazz chops, but at the end of the day it still sounded like noodling to me.
That being the case, my constructive critique on that track would be that it did go a little long without any sense of a journey (or story if you like). If you wanted to turn it into a song some day I'd look at overlaying some kind of structure that will help tell a story to the listener is drawn in. No need for intro-bridge-chorus and so on, just break it up a little with some more chords perhaps, maybe a slight change of tone (neck to bridge or vice versa perhaps) What would transform the track entirely is a sultry female vocal and/or some horns. The addition of another instrument like that would mean you could probably leave your guitar track mostly as is and use the other instruments as accents and punctuation.
Regarding the sound itself, I thought the BT was great. No suggestions there from me. Your guitar tone is great and the amp model suits the feel of the track too. I saw the poster on HC that said "Thats no AC30". Who cares? It's about the sound, not how you got it. Your playing was also impressive. My critiques are purely around the arrangement, and are offered in the hope that they might be helpful.
I hope that makes sense because I'm a. not really a jazz fan (unless it appears in trip-hop tracks), b. nowhere near your league as a guitarist, and c. not much of a songwriter.
I just thought as you originally posted the track for review, I'd have a go at giving you one. I hope thats OK
(Oh and by the way, I've put your track on my ipod, it's great to have in the background while I work so don't think I hated it haha)