I'm surprised I cannot find this question elsewere on this language forum but perhaps 'mp3' or 'audio' are just not the correct words to look for.
I have tried to get mp3 files attached to posts (and responses to posts) through the 'Attachments tab'. Unfortunately the .mp3 extension is not listed.
Is there a chance that it will be added? I would like to use these audio files in discussions on pronounciation.
Thanks.