I've tried the first way again through the DVD Audio Extractor and it's created a multichannel FLAC file. The music sounds good, though there's something niggling that's not quite right when compared with the original disc. It is minimal though, so not too bothered at the moment.
I've tried the second, more involved way, but stumbled at the first hurdle - that link to the DVD ripping tools doesn't work and I couldn't find PPCMRipper anywhere.
I'm now onto ripping the DVDs and blu-rays. I tried out ripping the first LOTR film using Aiseesoft's blu-ray ripper (which does both formats) and it's working well, it took around an hour a disc to complete though. The audio's spot on, but had to fiddle around getting the subwoofer set up, the yamaha's auto YPAO setup was a bit conservative with with the dB levels, to the point it was effectively off.
EDITED: 17 Jun 2015 08:10 by GRAPHITONE