In Canada there is no issue recording a conversation not telling anyone as long as you are part of the conversation. You can't record unsuspecting people having a converation. Which now makes me wonder if you are having a conversation with two other people and they talk between themselves. Maybe someone can answer that.
Amazing how many people think this doesn't apply to them and their CCTV cameras as far as the audio part of it.
They say there is one lady that makes all the Bell recordings and another airport/train station recordings. I bet I made a hundred training tapes on those (all calls are recorded, blah, blah blah) and never got paid a nickle!