General rate: Negative
Their site says "You are allowed to share the listening experience of your CDs with your friends as long as no copies of the music are made. Since the visitors to your Website will not be downloading or copying the files, you are within your rights to share the listening experience." This application is flawed, however... all a user has to do is "view source" and figure out how to access your mp3 files. Since anyone who knows how to "view source" of a web page can easily steal your mp3s with this app, I don't see how this is an application that you would want to use on your site.