Nine Entertainment will sell its national stable of talkback radio stations. (Joanna Kordina/AAP PHOTOS)Nine Entertainment will sell its national stable of talkback radio stations. But the agenda-setting talkback radio stations still packed enough political punch to have influence in Canberra. Investors welcomed the deal, with Nine's share price up more than 3 per cent on Friday afternoon, but still trading at a 20 per cent discount to 12 months earlier. "Video didn't kill the radio star and I don't think that the internet, or digital, will completely kill it either."