Dragging back an old thread...

Turned out that only one disk out of 50 had a truly unrecoverable error. Otherwise, I was able to extract everything and get onto the real problem: dealing with the metadata. I wrote up a full review of MusicShifter, if anybody wants to read the gory details. In sum, they're worth the bother if you want to trade-off money for time in ripping a large collection, but they're far from perfect, particularly if you want accurate metadata for obscure releases.