I thought that the optical digital output from the CDJ1000 only worked when the tempo was locked on 0% thus rendering it useless for DJing?

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"To that guy, who asked me to sign this piece of paper saying that I’m number one… thumbs up to you man!!!" - Ferry Corsten

Are the two rooms on the same side of the house? If so you could run the cable out through the windows, and you wouldn't need such a long cable as if you wound it round the stairs.

If you haven't got a cable long enough, and you can't buy one long enough, then you could always try making one (assuming you have a soldering iron and the necessary skills!). You can pick up RCA/phono connectors from Maplins or some other electronics-type shop, and you'll need a length of twin-ax cable (which is two lengths or co-ax cable run together and stuck together down the middle). That way you can make the cable as long as you like.

The only problem with long cable runs is signal loss. The longer the cable run, the more signal you will lose due to interference and heat loss as the cable heats up (which is minimal as the power of the signal is very weak anyway). I'm just waiting for when they make a soundcard with balanced XLR inputs so you can have huge cable runs!