Denny,

For playback of your laserdiscs' analog or digital stereo tracks (whether they're Dolby Surround encoded or not), use one of the 950's matrix decoders: Dolby Pro Logic II or DTS Neo:6. Personally, I think Dolby Surround encoded soundtracks sound spectacular decoded through PL II. You'll need to hook up the analog outputs AND the digital output from your laserdisc player to the 950.

For AC-3/DD playback, you'll need to take the player's RF output (if it has one) and run it through an RF demodulator. The output of the demodulator has to be hooked up to another digital input on the 950. Some receivers and processors used to have an RF demodulator built-in; the 950 doesn not, though I don't know if your particular Denon did.

Good Luck,
Sanjay