I've been busy rewriting the conversion code and this is my result. I implemented almost everything from the requested feature by mikefalcor. And there are some new features and fixes! Go check it out!
I just released 1.1.2!
New features contain window resizing, remove double spaces, new installer and the MP3 renamer in the context-menu of folders in windows explorer!
Have fun with it :)
I added 2 little features in the next version of the MP3 renamer. I made the window resizable, and I made the option to remove double spaces out of the filenames. If you have any ideas for more features, please add them in the feature request list, and I will see what I can do.