[Music][MMS][Bug-1037315] Audio .ogg and .3gpp mimetypes are shown as video files in SMS app

https://bugzilla.mozilla.org/show_bug.cgi?id=1037315

If the audio file received is shown as video/ogg and video/3gpp -> creating a blob and converting it to audio/ogg and audi/3gpp in music app -> so the attachment will be received from music will be shown correctly in SMS application
Please use === instead of ==.