Hi Mick...
Sadly iTunes isn't built the way you want it right now. A workaround is to ensure you add your new imports, one track at a time, in reverse track order, at least one second apart (probably not a problem if you're doing it by hand, but it makes a difference). If that sounds like a drag I've written a Windows vbScript for automating the process called
SortDateAdded and rather foolishly suggested in another thread the other day that it ought not to be too hard to migrate my script into AppleScript. I've since had a look at an online AppleScript primer which leads me to think the job is little harder than I first thought but I have organised some access to a Mac for testing so I will try to give it a go over the next week or so.
tt2