Add the ability to share audio hardware as we do with peripherals like keyboard and mouse. I am aware of other projects/API available like PulseAudio ([url]https://www.freedesktop.org/wiki/Software/PulseAudio/[/url]), Jack ([url]http://jackaudio.org/[/url]) that can do audio routing through network but limited in several aspects (not user-friendly mainly). The ease of configuring synergy inspires me to have such a thing for audio hardware too.