I'm in the habit of embedding CUESHEET files, LYRICS files and EAC LOG files into my whole-album FLACs, using metaflac. Until now, I've had to jump through some awkward hoops to extract that metadata. I've written a little C utility to extract those multi-line vorbis comments to external files.
A Win32 binary and full source code can be found here. (http://www.hegardtfoundation.org/flacstuff/FlacExportComment.zip)