I once knew of a site that had a free meditation/guided imagery that was really great, but they no longer offer it.
I have purchased from this site. My former psychologist loaned me tapes to try and I liked them. My favorite is a relaxation CD called "Warm and Heavy". It has 2 exercises, one called "Warm" and the other called "Heavy". Both include deep breathing and both are very relaxing. I have other CD's from the site that I like too. The site is:
www.wholeperson.com.
Another site that offers many guided imagery and meditation CD's is
www.healthjourneys.com