I am using Ubuntu 14.04 with Firefox 38 and since I updated to that version of Firefox I am unnable to use SoundCloud and TuneIn Radio websites. On both websites I get the error: media resource ... could not be decoded I already checked this post (https://support.mozilla.org/es/questions/999164) where somebody had the same problem on Win 7, Firefox 28, but the answer there is not possible for me as my firefox doesn't have those configurations :( I also disabled all of my add-ons, but still not working :'( Any help, is welcome :)