Well I asked some of you guys to beta test this a while ago, (months ago) then I forgot all about it.
Started working on it again about a week ago and now it's finished, thought you might want to see the result. (Or am I too optimistic?)
For those who haven't yet seen it, GuitarSim is a guitar-simulation program that allows you to play tunes on a virtual guitar.
Here's a little demo of it in action,
And here's the download links. (If you don't know which one to pick, you want the standalone program.) Program (Standalone) C# Source Code SGDK2 File (Requires SGDK2 be installed)