I have got a torrent with a Carl Kenner Japanese course which I found to be totally completely awesome but it ends unexpectedly without even covering the whole course material in CD 2.
It was quite hard to find any information about this on the net but eventually I was able to find that the course is still being continued.
You can get a ZIP file with CDs 1-4 here:
Carl Kenner Japanese audio course
The first two CDs are already in the torrent but if you download the package, you get two CDs (CDs 3 and 4) more. It’s worth checking out.