The Movie Network, and all of its' content, can be streamed over the internet from the Cogeco On Demand Online website.
TMNGo is mostly intended for portable viewing on a phone or other tablet-like device. (although it also works on the web)
Here's a direct link to TMN content on Cogeco On Demand Online - »www.cogecoondemand.com/channels/tmn
said by jpaik:
Thank you! Presumably one does not have to be within the Cogeco domain to view online (after the login). An internet connection from anywhere is all that is needed?
That's correct, you can access these shows from any internet connection, at any location. Just as long as you are signed in to your Cogeco account.