I use Meditations for a Fertile Soul and really enjoy it. There are three tracks and each are about 20-30 minutes. It's very relaxing for me and I've been using it in the evening or before bed, not quite daily, for about 2 months.
This is my first ttc cycle, so I don't have proof it "works" yet, but I enjoy it and think it was worth the cost.
Here's the link to it on Amazon:http://www.amazon.com/Meditations-Fe.../dp/B000I0QMZO
I have the basic one, but there's also one for medicated cycles and IVF.
Good luck finding something that works for you!