We are converting most of our media and sound files to flash, which is used by 96% of all browsers on the internet. Just select and it will play, no checking which format your browser supports. There's no need to futz with an external program like Quicktime, Windows Media or Real Audio. The Macromedia Flash plugin, is "standard issue" on nearly every computer -- so you won't have to do anything special to listen and/or watch our media. NOTE: One exception to this may be Firefox on the PC. If you are using Firefox on the PC, please check your flash plugin by using our simple test.