I listen to Hypnobirthing download every night when falling asleep, and then on YouTube are loads of videos and techniques. I did this with my first and had no pain relief just the breathing techniques, this time I've been told my boy is a big baby, so I have really been trying the breathing. It's all about you believing in yourself and getting as much oxygen to your muscles to help the baby.
And yes I listened to that and music when I was in labour, had to apologise to the midwife about my terrible taste in music.