The simplest way to call a sound file is to simply put a link to the file. Depending on your browser and configuration, it will either invoke your operating system’s basic player software, player support built into the browser, or a plug-in that provides the player capability.   As an example of the simplest format, the line of HTML code below will call up the file Track 2.mp3 from the current directory with any browser. Note that you can play any sound file with this command format, not just MIDI files