Multiple libraries in Foobar

I see that the Foobar help desk topic has been closed, hence this new thread. I'm more than happy with Foobar and have ripped much of my music collection. The part I have yet to rip is my huge collection of Grateful Dead music. Much as I love them, including this in my main library would lead to complaints if I use shuffle play when I'm not listening alone (no accounting for taste!) also scrolling through all artists or all albums would take ages. An ideal solution would be to have all my Grateful Dead music in a separate library - I've looked on Foobar FAQ but couldn't find a solution. Some people with similar issues have resorted to separate music players. Has anyone on here (Patrick?) found a way to manage this in Foobar or at least achieve the same result without separate libraries?