The newest Sirius XM Radio board member to join onto the company is Liberty Media CEO, Greg Maffei. Maffei comes to the board as a powerful influence on the satellite radio giant and took the position yesterday.

Maffei arrives at the position from a long background of executive experience, working previously as the CEO, Chairman and CFO of such companies as Microsoft and Expedia.

He is also the director of Electronic Arts and DirecTV Group. As he took the position yesterday, Adrienne Calderone, Sirius XM’s principal accounting officer announced her resignment and David Frear’s temporary control of the assignment.

[Via Orbitcast]