The speaker discusses the use of social audio applications that can be implemented with Janus, a WebRTC server. He explains how social audio applications work and the challenges they face such as real-time considerations and distribution to a wider audience. He offers potential solutions with Janus such as using the AudioBridge plugin for audio mixing or the SFU approach for exchanging multiple audio streams. He also suggests using multicast distribution for wider media distribution. The speaker provides some examples and references for those interested in learning more. There are a few questions at the end, but they are not significant to the overall talk.