Canada’s biggest media company says it is buying one of its biggest competitors. “BGM owns CTV and the Globe and Mail, along with 17 TV specialty channels, including TSN, MTV and the Discovery Channel. On Wednesday, BGM announced it had agreed to pay $1.4 billion for control of national rival CHUM Ltd., which owns 33 radio stations and 12 TV stations, headed by the Citytv channels in Toronto, Vancouver, Calgary, Edmonton and Winnipeg. CHUM also owns 21 specialty TV channels and the Muzak background-music operation in Canada.”