DVD Audio Extractor works well for DVD-A. It converts it directly to FLAC. SACD is less legal software that I am afraid you need to know a computer geek to get, but it IS out there and completely doable.
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J.Mimna Photography
Live Concert Recordist

Outlaw 970>
Emotiva XPA-2>
Martin Logan Preface

Some Of My Live Recordings: http://www.archive.org/bookmarks/J.Mimna

My Concert Photographs: http://www.flickr.com/photos/jimna/collections/72157613267633153/