Hi Tony,
As the KN6500 has no USB capability, you need separate Audio and MIDI cables.
The audio is straight forward enough, a cable to go from the two 1/4" line out sockets on the KN to the 3.5 mm stereo line in socket on the laptop, and a similar cable to go from the 3.5 mm headphone socket on the laptop to the two 1/4" line in sockets on the KN.
When I had my KN6000 I used a serial to MIDI cable to go from the Serial (RS232) connector on the Laptop to the MIDI to the MIDI In and Out connectors on the KN. The Laptop I used initially was an IBM 380XD Thinkpad and later an Acer Travelmate 526iTX. Most laptops not more than a few years old should work fine. The serial to MIDI interface cable together with suitable drivers came from Technote.
With modern laptops a USB to MIDI interface is an alternative way to transfer MIDI data between the KN and the laptop as recent model laptops may not have a Serial (RS232) interface port.
When playing MIDI files from your computer without the MIDI cables your KN will just act as an amplifier for your computer sound card, whereas the use of the MIDI cables and a suitable MIDI program on your computer will allow you to use the KN's own sounds. I used Power Tracks Pro for MIDI playback and if you are interested I probably still have a copy of the patch file for the KN6000.
WMA files only require the Audio connections.
Cheers
Len C
[This message has been edited by manorcourt1991 (edited 11-06-2005).]
[This message has been edited by manorcourt1991 (edited 11-06-2005).]