Pros
Compensation opportunity is very high. You're working in the entertainment industry so you are able to meet/work with a lot of well known entertainers/celebrities. Most everyone employed is extremely experienced and are some of the best in their respective fields. They are the biggest company in their field and have a huge network.
Cons
The following is typical of a large company like Clear Channel that are driven for the bottom line. If you can't put up with an environment like this, I suggest you look into something else for a living. CC is a very large greedy corporation. It is very cutthroat industry. Upper management tends to be out of touch with their employees. They only look at the bottom line and don't consider all the other moving pieces. Everyone is encouraged to work as a team, but in reality everyone is out for each other's throats. Work/Life balance is terrible. People that consistently work hard/smart are not rewarded as much as people that get lucky or that brown nose management. They claim to be better than the competition, but are not much different than the other large companies they compete with. Morals/Ethics of some management are questionable at times.