Ability to specify an output line for AudioPlayer

[hakanai]

AudioPlayer is hard-coded to automatically choose a line based on the specified format and buffer size.

My computer has about 6 lines which satisfy this and it seems to always choose my digital output device which goes to the monitor - ideally I'd like a way to choose where it goes.

I guess as a workaround, I can clone AudioPlayer, add a constructor taking LineInfo instead, and use that. It doesn't seem to have a huge amount of code inside, so doing that doesn't seem like a huge overhead.