Voice chats have emerged as integral parts of many online games in recent years--part of the social gaming trend--and VoIP solutions such as Teamspeak have been created in response. Mumble is an open source project that has gained an audience in this arena for the low-latency game chatting it facilitates. It offers noise suppression, gain control, and support for multiple audio standards. It's client-server focused, and does need its own dedicated server. We checked in with Thorvald Natvig, lead developer of Mumble, on open source and where Mumble is going.