Lplex is a console application meant to provide a free, quick, and hopefully painless way to:

• Create lossless “audio-only” dvd-video discs from wav or flac audio files, featuring:
  1. gapless playback.
  2. md5 verification of audio data.
  3. archival (dvd-rom) content.
• Losslessly extract unencrypted lpcm audio streams from dvd-video to wav or flac format.

You’re already fully equipped for hi-res audio (up to 24-bit/96khz) if you have a typical dvd-player and digital amp, and lplex is a way to take advantage of this.

audioplex.sourceforge.net