Ok guys, I have worked on the safety of the plugin. It won't delete any file anymore -- it just sends them to the recycle bin if you chose to do anything with them at all.
If you find that your album art and desktop.ini files are missing, then look harder. It is NOT deleting them. It's just moving the music files and the album art is not moving with it (the album art is not stored in the library).
You HAVE to go into the options and configure the plugin before it's run. It won't let you run the plugin without at least looking at the options.
I don't understand how it was deleting the file extensions, but I threw in two more checks to make sure they are there. If they are not, then it will just add a ".mp3" to the end. Because any music extension is better than no music extension. I even tested it on .wav, .mp4, and .flac. All of the files had the correct extension at the end.
I had a couple of my friends test the plugin on their libraries and their computers, and everything worked perfectly.
Also, make sure you have the most recent winamp!
-- 5.52 at the time of writing.
I am very sorry if you lost your file extensions. There is a tool called Tag&Rename that you can use to change them back. You can get it at www.softpointer.com
. You can also use Rename Master (http://www.joejoesoft.com
The newest version, along with the source, is attached.