Playing the ENTIRE library W/ MP11

I realize this may be EXCEEDINGLY "dumb" sounding...
But I cannot for the life of me figure out how to play my ENTIRE library
(which is over 12,000 files, as of today).
I've grown very spoiled in that I have always had MP just "shuffling
through" all of my audio files while I just sit back and enjoy as I work ....

The ultimate "juke-box" as I saw it....
In the OLD MP that I used until this weekend (MP9, I think), I could simply
"double-click" on the "All Music" heading in the library and MP would
"shuffle" through all 12,309 music files on my server... But now with MP11,
I don't see how to accommodate that...
So how the heck do I get MP11 to play EVERYTHING in my library instead of
only "Recently added" or similar... ??
After all, I've spent hundreds of hours ripping all my CDs to the server and
I really like having instant, random-access to anything I own, but more
usually I like just having MP just randomly select anything from the library
and playing it back...
Tunes I hadn't thought of in months sometimes "pop up" and I particularly
loved that...
Maybe my eyesight is failing.... but I don't see how to accomplish this...
at least not to my knowledge.

 

Right-click on the Songs node and select Play.

When I do this, I go to Library, click Songs, and then play the first track
in the library, which is pretty much the same thing. =)