Invalid getMimeType for audio/mp3

[renjithspace]

Code

use DataURI\Parser;

$audio = Parser::parse('data:audio/mp3;base64,SUQzBAAAAAAAI1RTU0UAAAAPAA');
$mime = $audio->getMimeType();
echo $mime;

Expected

audio/mp3

Output

audio/mp

[nevmerzhitsky]

Totally the same for the video/mp4 case. The problem is inside the regexp pattern.