Small general purpose plug-in that monitors any file-system folder and adds new files to the playlist. Handy for your incoming folder or a shared music folder on a company server.
New version only adds known file types and waits for the new files to become accessible before attempting to play.
Much improved over the first submission to the site and now works on all OSes tested with this. Some control over what happens when the detected files are fould would be nice such as whether to autoplay the new files or to only add those files not already in the playlist. Otherwise worked well as expected to do so.