Re: Playback using Webapi
I think "play" has never been part of the settings. This is not a setting but an action. If you talk about the GUI you just press the "pause" button to start then again (it shows a "play" icon at this time) to stop (pause) the stream.
If you talk about control from the API I think it has never been there and needs a general update to handle posting actions.
Edit: issue https://github.com/f4exb/sdrangel/issues/485 opened in Github