I have a large external collection and would like to import a select folder to itunes to create a playlist. Is there a way to import the folder without mixing the contents with my large itunes library?

I have a large external collection and would like to import a select folder to itunes to create a playlist. Is there a way to import the folder without mixing the contents with my large itunes library?

I'm trying to avoid having to fish through the thousands of songs already in my itunes library to create a playlist from the songs in the windows file that I've already selected.