I have been meditating lately in complete silence, and I gotta say it does help me to relax. I just followed some quick tips someone posted on their blog. haven't used a cd
The jist of her tips were (but not limited to) sit comfortably upright with your eyes closed, breathe slow, deep breaths, listen closely to and focus on your breathing, and free your mind. simple stuff, but it's helped me tons.
I do it just about 5-10 mins a day :)
hope it helps you too, good luck!