Let's please try to explain things instead of just downvoting questions.
Try this link http://forums.mozillazine.org/viewtopic.php?f=23&t=21175...
TL;DR there is a licensing issue with the MP3 decoder. It's more complicated than that, but most of it is due to software patents. http://en.m.wikipedia.org/wiki/MP3#section_10 has more info if you're curious.
Let's please try to explain things instead of just downvoting questions.
Try this link http://forums.mozillazine.org/viewtopic.php?f=23&t=21175...
TL;DR there is a licensing issue with the MP3 decoder. It's more complicated than that, but most of it is due to software patents. http://en.m.wikipedia.org/wiki/MP3#section_10 has more info if you're curious.