There are many syndicators out there, including Public Radio Satellite System, Pacfica, WFMT, Longhorn radio, Spin Magazine Radio Show, Universal Buzz Radio, to name a few. There are many free programs made for non-commercial stations.
You can start by contacing CBI, Inc. Here is a link:
<a href=http://www.collegebroadcasters.org/programs.shtml>CBI Program listing</a>
The organization is great for stations to be a part of and offers many benefits.
If you are on campus only, ie do not have an FCC licensed statio, then you can try to contact Westwood One, Premiere, and some of the other sydicators, that send programs on CD. In that case, commercials aren't a problem on some of their shows. However, if you are an FCC licensed non-commercial station, then you will have to edit them out, which is not usually desired or allowed by the commercial syndicators.