The Globe and Mail reports in its Monday edition that the latest fight over Net neutrality in Canada is coming to a head. The Globe's Christine Dobby writes that last week, parties filed what are expected to be the final round of comments with the CRTC on a regulatory challenge to Videotron's Unlimited Music program, which involves "zero-rating" music streaming services. The Quebecor unit launched the service in September, offering subscribers of some of its higher-end cellular plans the ability to stream select music services -- Spotify, Rdio and Google Music -- on their mobiles without the bandwidth use counting against their monthly data buckets. The service quickly faced criticism that it violated the principle of Net neutrality, whereby the telcos should treat all content equally. There were numerous complaints about the service. Opposition to Videotron's Unlimited Music service comes after a CRTC ruling in early 2015 that ordered Bell Mobility to change the pricing of its Mobile TV application. The commission ruled the company was giving its own television programming an undue preference by exempting up to 10 hours of viewing time from mobile data usage charges. Bell appealed the ruling.