Amazon is in talks to become a major player in regional sports broadcasting for the NBA, MLB and NHL — with a surprise deal that could shake up the way fans have watched their local teams for decades, The Post has learned. The Seattle-based e-tailing giant headed by Jeff Bezos is in late-stage talks for a contract to livestream on Amazon Prime this coming season all the Bally Sports broadcasts of 13 NBA franchises, as well as five MLB teams and nine NHL teams, sources close to the situation said.