I won runner up on CMT's NOW That's What I Call Country Vol. 4 Sweepstakes which was    One (1) copy of the latest CD from each of the featured artists on the NOW That’s What I Call Country Vol. 4 CD
·         One (1) NOW That’s What I Call Country Vol. 4 CD but I have not received my prize.  I have sent 2 emails but no response from them.  Does it usually take 6 months or more to receive a prize?

This one?

CMT.Com - NOW That's What I Call Country Vol. 4 Sweepstakes
Enter to win Two (2) tickets to a show of each of the featured artist on the NOW That's What I Call Country Vol. 4 CD. one (1) NOW That's What I Call Country Vol. 4 CD. 
Restrictions : 18+ US | Hits : 849 | Added : 06-12-11 | Expired : 07-10-2011 | Rules
Entry Category : Daily Sweepstakes

Did you reply back within 3 days of your win notice?  The Rules for that sweep say:

Prize Winner Verification: The potential Prize Winner(s) must prove eligibility, including, without limitation, proof of age and residence within three (3) days of being notified as a potential Prize Winner. In the event of non-compliance by a potential Prize Winner such potential Prize Winner shall be disqualified and all privileges otherwise due as a Prize Winner shall be terminated and an alternative potential Prize Winner may be chosen from among all of the remaining Eligible Entries received in MTVN's sole discretion. The Prize Winner must sign (his/her parent/legal guardian if Prize Winner is a resident of a jurisdiction that deems him/her to be a minor) within three (3) days of receipt of such documents from MTVN: (a) an affidavit of eligibility and release of Sweepstakes Entities...

**If you met their requirements, contact them with any proof that you have that you did as they asked.  If you did not return their form, at least you know why the prize didn't arrive..

It's true that a message on a Facebook page has sped things along for me a few times!!!!  Also, with another, I won a giftcard that they never told me expired in 3 months and when I posted on their Facebook page, I had a new one in a week!!!!!  I think it doesn't look to good if they don't do what they agree to so when you put it on Facebook, they want to clear it up quick.  I am always super nice with posting on Facebook b/c I want good results!!!  It's worked for me!  Good luck!