Create a playlist in iTunes based on a hard drive folder

I'd like to be able to base playlists in iTunes on a folder on my hard drive.

For example, say I have this directory structure:

C:\MP3s\Doctor Who Music
C:\MP3s\Star Wars Music

Importing all those MP3s into iTunes is really simple - at the bare bones version you can just drag the MP3 folder into the iTunes window and it does the rest.

But, having done that, what I'd like to be able to do is point iTunes at each of those directories and have it turn them into their own playlists, so I end up with a Doctor Who Music and a Star Wars Music playlist based on the MP3s locations on the hard drive.

Does iTunes have a way to do this, or is there a way to trick it into this with some other program?

(I'm on Windows, but I'm sure Mac users would also appreciate answers to this as well.)

Its really simple with iTunes 9. iTunes 9 has a Playlist Folder in itself. All you have to do is drag a particular folder in a particular location onto the playlist pane. It will create an entire playlist based on files only in that particular folder. CHEERS!

In iTunes you may be able to create a SmartPlaylist that filters on Album or Artist. There doesn't appear to be a way to use the folder to filter the list.

If you make an empty playlist and then drag the folder from the harddrive over that playlist, it will load all that music in that playlist.

I had the same problem and didn't find a way to solve it in internet. So I decided to write a simple app that help us to re-create our folder lists 'mp3s' into iTunes. It's a simple program written in delphi, here is the link on how to use it and here the link directly to the (not installing) app.