It's nice in many of the other language courses where an option is given to hear the slow pronunciation. However, it hasn't bothered me to only hear it fast. I have found it helpful to practice the lessons repeatedly to grow accustomed to hearing it at full speed.

Yeah I was suddenly thinking of "yûpaí" instead of "líubai"

It's 刘备(Liu Bei).

It's the currency China uses, just like how the US uses the dollar.

Yes it is very faaaast