How do you do lip sinc in stop motion animation?

Most people start by putting there sound track in a program like Magpie there is a standard version somewhere on the internet which is either a freeware or a lot cheaper than the professional version take a look at this http://magpie-pro.en.softonic.com/ to give you an idea ok.

woo ! still havent got the hang of lip sync yet going to start practacing soon!

Thanks Cavor. Do you know how much it is?-I can't find a price on that website.