Missing out-of-box support for some audio formats

[813gan]

Hi.

With default setup (and vlc backend) bongo is unable to play m4a and opus files which are not extremely rare. I was able to workaround it via adding these format to lists of extensions and adding

(setq bongo-custom-backend-matchers
            '((vlc local-file "m4a")
              (vlc local-file "opus") ))

to my .emacs but in my opinion it should not be necessary.

[Grant-S-Z]

Quite useful! Thanks for your issue.