I play a game called Arma II and there is a mod for the game called ACRE (Advanced Combat Radio Environment) and it utilizes a plugin within teamspeak and a mod within the game to allow for location based voice chat to simulate a vicinity effect. Basically, we both get in the same channel on teamspeak and if we are standing next to each other in-game.. we can hear each other. However; we can still be in the same channel in teamspeak and be 1,000 blocks away from each other, and have no idea the other one is talking. Basically; it uses the voice chat and plugin to emulate real-life speech behavior. Unfortunately I don't have the programming experience or knowledge to do something like this myself. Here's how I'd like to see it done: 1. Clientside plugin for teamspeak 2. Serverside bukkit mod that reports location of all players and interfaces with the teamspeak server thus adjusting the volumes for everyone based on their location. 3. Avoid a clientside Minecraft mod if at all possible Here is a link to Arma II's ACRE mod if any of you awesome programmers are interested in dissecting it. Additionally if you watch this youtube video and pay attention just after 2:20 you can see what I'm talking about (ignore the radio chatter). As he walks around the audio level of the other troops just talking changes based on the vicinity of others. If this could be duplicated in Minecraft a plugin like this could add a tremendous amount of immersion to the game when playing on mega servers with massive populations. Any questions; let me know.