http://soundcloud.com/occult-techno/occult-techno-13-06-09 (not what you think)
It is recommended that if you end up really liking Belbury Poly (chances are good), you should probably support them since they did not ask for the music to be uploaded. Luckily Ghost Box - http://www.ghostbox.co.uk - doesn't seem like the kind of record label that worries about that kind of thing.
There is also plenty to download from http://www.electrotrash.co.za/downloads/ (it helps if your looking for something specific)
This may not be all so free for people living in countries with a bad bandwidth infrastructure. Or just people without bandwidth.
Finally a music video link: http://www.electrotrash.co.za/2009/03/06/gazelle-die-verlore-seun/
It's not easy finding the Gazelle album in the shops. So I bought a Cure CD instead. For R130! A good price these days.