I need advice on how to grow a two-channel audio system into multi-channel HT audio system - without removing any existing parts. I currently own some equipment oriented toward two-channel stereo music listening: o NAD C340 integrated amplifier (two-channel) o NAD C540 CD player o Snell QBx 20 speakers This combination is wonderful for music. I do not want to replace any of it. Now, I recently purchased a Toshiba 34HF81 television and a Panasonic RP-91 DVD player. I have the two-channel analog output from the DVDP connected to my amplifier, playing through the two mentioned speakers. The sound is good, but I imagine that adding a center speaker would improve dialogue intelligibility. My existing amplifier cannot power another channel. I'm wondering how I could get to 5.1 or 6.1 HT-style audio without disturbing my existing two-channel equipment. That is, I would like to keep my same two front speakers connected to the same NAD C340 amplifier; I don't want to change my current CD playing set-up. I would like to add speakers and some sort of receiver/amplifier units to power the additional speakers. The revised set-up should not require me to reconnect my Snell speakers to this new amplifier or receiver. Would you recommend buying an AV receiver and running the two front channels (pre-amp) out to the NAD amplifier? (This would leave two of the receiver's amplifier channels unused.) If I did that, I'd have a volume control for the two front speakers separate from the volume control for the other three or four. Would the volume level be difficult to coordinate? My DVD player also has built-in DTS and DD decoders. Does having these decoders allow me to run the analog outputs from the player into a multi-channel amplifier, with the two front signals going to my existing NAD amplifier? I'm not clear how I would control the volume of the other speakers. Is a receiver or preprocessor still necessary in between the DVD player and an amplifier? Any advice - including product recommendations - would be greatly appreciated.