If you have questions about meditation in general, mindfulness or Insight Meditation, the following may be helpful:
‘About meditation’ webpage from London Insight – includes some short guided meditations
A Guide to Sitting Practice by Tara Brach, teacher at Insight Meditation Community of Washington (US), including suggestions on posture, setting up and sustaining a regular practice.
Guided Meditations given by Zohar Lavie at the Loving Kindness (Metta) retreat and Caring & Presence retreat in Sheffield, Sept 2012.
Guided meditations and talks by Insight Meditation teachers worldwide (including Gaia House teachers) can be downloaded from Dharma Seed