Below are links to various types of media files.  How these media files are handled by the web browser depends on:

• The browser
• The OS
• Media applications and plugins

Most browsers can be configured to use certain media applications or plugins to handle particular types of media files.  Internet Explorer is unique in that how it handles a given media file type is dependent on how the Windows OS is configured, not the browser….

.mp3 audio file link
http://middmedia.middlebury.edu/media/achapin/Capture-howtodoit.mp3

.mp4 video file link:
http://middmedia.middlebury.edu/media/achapin/screenflow01.mp4