Originally posted by: digitalfreaknyc

Again, do tell. How exactly is this possible?

I think all the clues are already in this thread - you connect the RF out of the Laserdisc player to a decoder/demodulator, then connect the SPDIF out of that to the SPDIF in on your soundcard (some Laserdisc players have SPDIF out, which simplifies things). I used a USB SPDIF in/out box so there was no mixing, and I got a bit-perfect digital rip of the AC3 audio stored on the Laserdisc. It sometimes took a couple of goes when the soundcard skipped a beat in the middle of a recording, but otherwise all I had to do was strip out the padding between AC3 frames.

DE