How to use uSpeak voice chat

excuse me?

The USpeak product was removed from the asset store. Details of it were on that thread but this is from the author:

• have for the forseeable future shut down the middleware portion of my business. I have a sort of agreement with Daikon Forge to help work on their own middleware line (mostly, helping with their upcoming DFGUI 2.0 refresh) which has taken up a ridiculously large portion of my schedule. Given the little remaining time I have left, and how little this has been paying, I just can't continue on providing support. I need to focus my time on other tasks. I'll probably re-upload it for free to the Daikon Forge forums, and I may even create a sort of "sequel" for the Daikon Forge middleware line at some point, but I make no promises in this regard.*

The sucessor to it is the DFVoice product that's available on the store here: https://www.assetstore.unity3d.com/en/#!/content/19344