Integrating two systems

I have had some questions nagging at me for a couple of weeks as I'm pondering my new stereo set up. I'm hoping some of the audiogon learned will throw me a bone. First I want to mention how enjoyable it was to read the threads on tuners that appeared a couple of weeks ago, it also has led me to a question, but first things first.

I am moving into a new home and want to integrate two separate systems. First is a " better" system of Krell integrated, Cal audio labs CD player and Joseph speakers. Second is a inexpensive integrated or receiver (have not purchased yet) driving the in- ceiling speakers throughout the house. On some occasions I would like to have both speaker systems playing from the same source (CD or tuner). Questions: 1) since my tuner has only one output can I rigged up some sort of split interconnect that will allow me to send the signal to both amps? Will this degrade the signal? Does such an interconnected exist? I have a pre-amp out on the Krell but this would necessitate having the "good system" on at all times. Would a newer tuner have multiple outs and thereby solve the problem? 2) my CD player has multiple outs, so the interconnect is no problem but are there any other issues I should be aware of? I'm wondering if the timing of the two systems could be staggered enough to cause problems?

Unrelated question: Does differing length speaker cables harm system performance in a two channel/two speaker set up?

If the above questions bore you to tears, perhaps this will be more up your alley. The aforementioned threads on tuners got me to thinking. Many respondents considered seventies era components to be the best tuners ever made. To use an auto analogy, there may be many people who would prefer a 1963 Corvette to a 1995 Corvette. But I don't think anyone would consider the 63 car to be a better piece of machinery. It would not handle better, it would not go faster, it would not be more reliable. Are 25 year old tuners really better than today's electronics or is this just a question of sentimentality.

Thanks in advance for any responses.