This player plays mp3 and wav files. The player that appears, above in the red box, depends on your browser and the browser's installed plug-in. If you do not see any player above, then your browser does not have a plug-in player.
Browser: Internet Explorer:
♦ Microsoft Windows Media Player

you will see the player inside the red rectangle with a large play button on the left. Press the square button to stop the audio.

Browsers: Internet Explorer, Firefox, Opera, Chrome
♦ Apple Quicktime Player

you will see the player inside a bigger yellow rectangle, with a smaller play button on the left. Press the square button to stop the audio.

These 2 Flash players play 'swf' swift files. An 'swf' file can be created from any wav,mp3 or almost any other audio format. The players that appear, above in the red box, does not depend on your browser. It will always use the Flash plug-in. If you do not see any player above you can ckick on the Flash Logo to install the plug-in. The player buttons and controls can be customized
Browsers: Internet Explorer, Firefox, Safari, Opera
♦ Adobe Flash Player

Press the stop button to stop the audio.