Take your icon game to the next level. Check out Fonticons, from the maker of Font Awesome.

fa-file-audio-o · Unicode: f1c7 · Created: v4.1 · Categories: Web Application Icons, File Type Icons · Aliases: fa-file-sound-o

After you get up and running, you can place Font Awesome icons just about anywhere with the <i> tag:

fa-file-audio-o

<i class="fa fa-file-audio-o"></i>

Looking for more? Check out the examples.