You can still listen to this superb documentary by David Quantick on its BBC Radio page via Realplayer: but, something like 18 months ago, I found that someone had successfully ripped it to mp3. Each chunk is about 60 MB, but I’m telling you, you should really listen to it. Even if you think you don’t particularly like psychedelia. I found it quite riveting. Part One, and Part Two, which of course you can also stream here through the magic of PlayTagger.