Glitch, where did you buy your Nakamichi CD changer? Is it one of the 16x ones? I have physically seen one but can't find anywhere to buy one.
Also (you may or may not know) how does it work under Win2K? I used to have one of the Teac 8x changers and it was great until I upgraded to Win2K. Then (as expressed over at "Dan's Data" :
Windows 2000 treats IDE CD changers as one drive. Win98 gives them multiple drive letters; Win2000 gives them only one, and there's no elegant way to access what's in slots other than the one you're using at the moment.
You can mount and dismount discs "by hand" from the Computer Management console. You can even semi-automate it by making a script. But there's no way to even see the names of discs other than the one currently mounted.
Microsoft have a rather sniffy document on the subject here (http://support.microsoft.com/support/kb/articles/Q227/4/25.ASP), in which they try really hard to explain that this is actually a good thing.