I bought the audio download version and keep the MP3's on Google Drive so I can access them from my smart phone or a computer wherever I am. I have probably listened to each "lecture" least 3 or 4 times. I find some new insight each time I listen and I highly recommend this to anyone looking to gain a fresh or deeper (or initial!) understanding of the perfections. I find that Jack Kornfield makes the dharma very accessible. These are live recordings and you can hear people laughing, coughing, sniffling, etc. in the background. I very rarely find it distracting. I like that the recordings are live and not read from a script.