need to delete entire library

Well this is my last day to try the trial version; the forum admin just let me on. Thus far I have been unable to get A. to work at all. I tried to import my music library with each individual album as a separate folder. Initially A. just crashed instantly on opening, but now gives me an error message saying there are too many folders for the OS to handle, and I should group them into higher level folders. But I can’t do that or anything in A. until I figure out how to delete the entire library and start over. And there seem to be no instructions whatsoever anywhere on how to make that happen. I sent an email to A. asking how to do this many days ago and have not heard back. This is not giving me a good feeling about the people who developed this. Any hints on how to delete a library? Ideally I would just point A. at a different drive.