The broadcast on MLB.com is the Pirates feed, so if you want to listen that's your option. I feel like someone told me that if it's showing as a MLB.com broadcast as opposed to a specific radio station it's free to listen to, but don't hold it against me if I'm wrong.
Chris Tillman makes the start for the Orioles today. It'll be Tillman's fourth appearance of the spring as he tries to win a spot in the rotation (although with Justin Duchscherer's troubles it's looking more and more like he has a good chance). Ross Ohlendorf starts for the Pirates.
I heard something about some other games going on today in some college sport, feel free to chat about that in here as well.