It seems that the preference pane will not work to start or stop MySQL yet so you will have to start it manually from the command line and create a link to the socket file.
First, start MySQL in a terminal window with the following command:
Then either close the terminal and open a new one, or just hit Command-N to open a new terminal window. Then type the following:
sudo mkdir /var/mysql/
And lastly, create a symbolic link to point the default socket file:
sudo ln -s /tmp/mysql.sock /var/mysql/mysql.sock
I will update this post with info on how to get it going with Lingon