Can not read MP3 files

Hey guys. I'm pretty new to Firefox. I used to before eyebrows on Google Chrome. And I decided to make a switch to Firefox.

I spent maybe a month and I finally feel at home with it. Although now when I had to play different files online, I came across this problem, that I've never had before.

I can't play all the files mentioned in the title.

"When I try to play a MP4 video I get this error:"
"Video format or the MIME type is not supported.

And when I try to play a MP3 I get this error: 'the file could not be playd because it is broken.
Also, in the window of the Console, I get this error: ".mp3 could not be decoded.

Example sites that I can't play these files are

MP4: http://playrust.com/friday-devblog-16/
MP3: http://soundcloud.com

I have Windows 8.1 if it is interesting too.

Unlike Chrome, Firefox depends on some components of Windows (Media Foundation) to decode the MP3 and MP4 media. Apparently, some versions of Windows 8.1 includes all features of media. I have no idea whehter your is of those, but Microsoft has a download page where you can get these feature if that is the problem:

Edit: According to a blog post, I've read, Microsoft was forced to unbundle these features and provide the separate download because of Europe's anti-Trust concerns, so this can be a problem more common that I had realized.

Tags: Firefox

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