Jurors heard former President Donald Trump’s voice on Thursday. An audio recording played of Trump talking with his former fixer and attorney, Michael Cohen, about buying the silence of an alleged affair. And for CNN legal analyst Joey Jackson that audio evidence is “critical” for the prosecution to hit home that Trump wasn’t oblivious to the suspected scheme to quiet former Playmate Karen McDougal (alleging they carried on a love affair) before Americans voted for president in the 2016 election. “This is critical information,” Jackson said. “What’s critical with respect to Donald Trump’s know…