I don't know much about mac but I do know for most people who encounter this they play in realplayer mode instead of the pop up window and this fixes most issues also if you have problems you can hit stop and play over and over until it works without it counting as a click.
Go here for more information:
http://friendvista.com/forum/vie ... 2700&extra=page%3D1
P.S. Love your avatar.
