Jukebox - Don't shuffle ALL the tracks, just the folder I specify

I have a separate music directory specified in Asset that contains a general assortment of songs just to put on in the background (under 2k). It is updated from time to time by dropping new songs in. It's my mega compilation folder per se.
What I'd like to do is have some sort of jukebox type shuffle running that only pulls songs from this directory and not from the whole multi-thousand song collection (thus avoiding christmas songs and other unwanted tracks from playing). Is there any way I can specify a given 'audio tracks' folder to be used for a jukebox random selection playlist?

I cannot see a way of doing this.