Deleting the whole folder (including the file G-Tune didn't create) won't do any harm. The only file in the folder not created by G-Tune was a hidden ".gid" file, used by the windows help system.
In your case, simply delete the "G-Tune" folder and erase the link from your start menu. I believe that the uninstall program will have removed the registry entries. If not, you just have some useless text in your registry - that's not too bad, there's plenty of junk in there anyway!
I hate programs that write their junk all over the place and refuse to be uninstalled!
Re: G-Tune
Deleting the whole folder (including the file G-Tune didn't create) won't do any harm. The only file in the folder not created by G-Tune was a hidden ".gid" file, used by the windows help system.
In your case, simply delete the "G-Tune" folder and erase the link from your start menu. I believe that the uninstall program will have removed the registry entries. If not, you just have some useless text in your registry - that's not too bad, there's plenty of junk in there anyway!
I hate programs that write their junk all over the place and refuse to be uninstalled!