Here are a few other sites you may find useful:

Actors' Grapevine - A great resource for auditions & shows around the Carolinas. Beloved by actors and theatre-goers alike.

SCIway - A guide to the state of South Carolina, with things to do, places to see and more.

The Arts Council of Rock Hill & York County - Theatrical and artistic goings-on in the area.

LibriVox - A great source for free audio books and plays. Webguy Ted has recorded six full books and other things for them.