It is a top candidate for worst Mac application. It comes as a custom installer that you need admin access for, the GUI looks like it hit every branch on the way down from the ugly-tree, it plays only Windows Media*, and it plays it very badly, ie. quality looks like it was converted to 320x240 Realvideo and back.
Then when you want to delete it it actually has locked files inside the application package.
*It does not even play AVI, despite it being one of the most used video containers. The difference between the Windows version and the Mac version is that on Windows it is Windows Media Player, but the Mac version is Windows Media Player.