New
#11
The warning about an addon is likely due to the site having an embedded audio or video file which your browser does not have a plugin for. The most common ones are Flash (.flv), Shockwave (.swf), Quickslime (.qt), etc. The fact that the site you posted the screenshot of says "Radio..." in it could mean an audio file of some sort, especially Realplayer (.ra or .rm) or even a proprietary player that the site itself want to provide. :)