Not sure but National post has frequent outages. CFRB usually has a pretty good audio feed but I don't use it much because it's available over the air here. You could also try ctv.ca.
CFRB simulcasts on Shortwave radio at 6.070 MHz. It is a weak signal, but it can be easily heard in the eastern US.
So, if any of you Freepers have a shortwave radio, you might be able to listen to CFRB.