Well you can check this site out it has alot of info for yah http://www.albertaoutdoorsmen.ca/fishingregs/.
It tells you all the rules and regs but im not too sure on the whole purchasing a license thing, but i can find out for yah and get back to you, oh and by the way, hate to burst your bubble but there are no Musky here in Alberta, but if you need some advice on some good places to go fishing, just let me know and i can point you in the direction of good fishing.

But i will try and find out some more info on the whole license situation.