A sort of autoplay: how to turn it off?

[mauriva]

I use Feishin on Windows (1.13.0) as a client to access a Subsonic server (it is a fork of mStream).
For some time now, as soon as I open Feishin, the first track in the listening queue starts playing automatically at a very low volume, without me pressing the Play button and without the corresponding icon changing (there is no "Pause" icon).
If I press the Play button, the track playing in the background continues to play, but at a ‘normal’ volume.
It’s a sort of ‘auto-play’ feature that I don’t know how to disable, and I’m not sure whether it’s down to Feishin or mStream.
Some suggestion?

[mauriva]

I report that the fork of mStream has since changed its name and repository. The correct link is now this.
What I described in my initial post still remains valid.