Comment 14 for bug 438203

> If we install Linux we need to have internet connection to listen to a MP3 song even though it is a widely used format. I dont remember Microsoft giving such an option.

the mp3 decoding is patented and can't be shipped without paying the right to use those, you do pay your microsoft os so they can use some of this money to buy your mp3 decoder, you don't pay ubuntu though so this can't be done there