This season, the Cardinals have ended their 50-year partnership with KMOX radio - a powerhouse station that was heard through much of the midwest, and under the right conditions, even in Chicago. The Redbirds have purchased their own radio station -- KTRS -- this way, they own the entire broadcast. (More than likely, they were not going to get the same broadcast rights money from KMOX, so they saw this as a way eventually make more money down the road -- besides, KMOX is a talk station and couldn't devote extra programming to the team)
However, KTRS doesn't entirely cover all of the St. Louis market, sad to say. (for them, anyway) The team does have a 114-station network, so some Cardinals fans in Springfield, Mo. have a better chance of actually hearing the games than somebody just outside of St Louis!
To make up for the shortfall in the signal of KTRS, the team has sent a letter to 50,000 fans -- offering the a free XM Radio. (The 'birds aren't going to pick up the 12.95 service for MLB audio, or any of the other charges, of course.) As you might imagine, the club is taking some flak on this -- rather stupid -- decision.
To compare -- this would be as if the Cubs were taken off WGN and put on stations in Elgin or Aurora. Old-timers might remember the 1970's White Sox were stuck in this dilemma -- dropped by the old WMAQ, with NO takers for their games. Harry Caray was hired, and a 3-station network was created around Chicago....but still, it wasn't enough to cover the entire metro. But -- the power of Harry started to cook, and eventually the Chisox were back on a major Chicago station.