cool stuff - i used to play guitar a lot and used powertab and guitar pro, but in both there is no feedback, this sounds super nice to me, even though admittedly these days I won't get around to testing it for you anymore as i don't have a guitar anymore.
I see you have an import for popular tab formats. not sure whats popular, perhaps others share that sentiment. Would this include things from for example powertab / guitar pro to be imported?