EDIT: use this one:
https://discord.gg/010ixMlfmhK3ZYuIgHi folks. I figured we could use some voice chat. I set up a server today and anyone is free to join. It uses Discord, its similar to teamspeak but easier and free. You dont even have to download it if you dont want to, it will launch in your browser! That being said, I recommend the download, its better.
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That is the invite link to the discord server. Once connected, set a push to talk button (bottom left of screen I believe).
If you would like to download Discord, it takes like 10 seconds, here it is:
https://discordapp.com/downloadEnjoy!