Micheal,

The US copyright office is backed up two years filing copyrights. BMI recieves probably 1000-1500 CD's a week. ASCAP about the same. It is why you usually have to have a representative and develop a relationship to speed the process up. They might not know the purpose for the CD. Might want to check with your rep. If it has been 8 months, it might have been discarded as unknown reason.
With the legal situations as they are, most PRO's, publishers, writers, artists, etc. rarely are able to open packages from people they don't know. We are frankly surprised there hasn't been some crazy person angry because his songs are not cut, to send some anthrax or some other substance. It is a weird world out there.

MAB