Looks very good - I'll get a chance to look properly on a laptop tomorrow. One thing I'd like is the ability to do 9 string tuning - I have a 9,and yet to get seriously into it, partly because it's so easy to get lost and I'm yet to get on top of the patterns that I already know well on a 6 string... I know it's the same intervals as the bottom 4 strings of a 6 string, but seeing the patterns would help, I think. But as its open source, I guess I should do it myself!