Before I go and setup a server.

This is just a prototype. Doesn't need to be fancy.

The audio will be coming from a mobile device, so maybe save to stream that is relayed which I can listen to from VLC?

Or maybe I save the files locally every 30 seconds, and add them to a output stream.

I'm new to audio streaming send and receiving.

GITST. Mobile device sends audio to local server which creates a stream I can connect to and listen.

Thanks