CMCAward

Contains lots of links to other Christian music web sites

Harry Fox Agency

This is the place where you get mechanical licenses for any songs you distribute that you didn't write.

Harmony Central

A great place to find used music gear (classified section) and information about new and old gear.

Gary Driskell School of Songwriting

An awesome christian composer who will help you with your songwriting craft for a nominal fee.  I haven't ever used his service, but it sounds like a good deal to me!

UCMShowcase

Site with huge listing of unsigned Christian groups including sound clips, booking information and web address (when available)