Support for media extensions is hardcoded

[extorn]

In the get.php (lines in the region 70 - 80) you have a switch statement based on file extension.
Would it be possible to add audio support here (for example for mp4 audio), or better yet, get the mime type using a standard library lookup.

[extorn]

I've added code to one of my pull requests that reads the mime type from the file.