Want local monitoring

[christofmuc]

Instead of the "Send" function, which only uploads yourself but you will not hear yourself from the server, we should add a local monitoring function that mixes the locally recorded audio into the queue, with adjustable volume and adjustable delay.

[christofmuc]

I'm honestly not sure why there is the request for an adjustable delay. I think it doesn't make sense - you will get a selector for either local monitoring (minimal delay) or server monitoring (same as all others)