Feature request: reverse playing

Hi, dear developers, I please a new feature of Moc: the reverse playing possibility! (The AlsaPlayer can this).

Thanks!

What for?

Possibility to playing the music (track) backward. I would like playing the music backwards being an opportunity. So because for his end -> to his front.

Looks like someone's into playing "Stairway to heaven" backwards ^^

Yeah, we've all been there :P