iHeartMedia invested big in podcasting and Conal Byrne is in charge of the payoff.  Byrne was running Stuff Media when it was acquired by iHeartMedia in 2018, and he's now overseeing the biggest commercial podcast network in the world. With over 250 active shows and 127 million downloads each month, Conal Byrne was an easy pick to top the list as The Most Powerful Person in Podcasting.