Welcome to the world of lossless, multichannel digital media! You'll also want DVD Audio Extractor for your DVDAs.
It is such a time-suck, but worth it. I've been ripping since December 1st, starting with all my hi-res multichannel music, followed by my DVD & blu ray movies, and then my CDs. I've got about 500 CDs to go!
Cheer up, you're done with the hard part. @: My 700 CD's were ripped a year ago before I knew that surround sound even existed......CD's were simple in comparison to high res.
I just finished ripping a small stable of 150 SACD, DVD-A, and BluRay audio discs. Now I'm in meta-data hell, but nearing the finish.
My biggest take away - if possible get the meta data complete when you first rip the disc. You'll waste a lot less time than I have!
I was under the mistaken impression that high-res FLAC metadata editing would be painless like it was for the CD's. Big mistake. The size of high-res multi channel files makes processing is slow and painstaking, although as many point out, a fast disk drive helps.