nice, i liked the rhythms going into there, you did manage to catch that somber feeling, and at the same time that 'free-flowing' feel. My only thing was the ending, it just seemed abrupt and left off, but then again, ending the song always seems to be the hardest part, cause you never know exactly what you want to do.
As for programs, I personally use Acoustica Mixcraft 5, you'd have to dish out 70.00 US Dollars for the program if you don't want any 'ad's' from Acoustica asking to buy their product after 14 days, but overall, I think the program is well worth the price, actually I believe it might be heavily underpriced.