I'd heard the name from time to time, but really wasn't exactly sure where it was. Judging by the stairs in the entranceway, it was a basement club, and judging from the menu on the still extant web site it was a little more upscale than your basic burgers & nachos show-pub.
The State story mentioning the closing dates it to "last week". Given that the story ran on 7 January 2012, the inference I draw is that The White Mule closed out with the year at the end of 2011.
(Hat tip to commenter Tom)
UPDATE 23 January 2012: Added Jammin' Java to the post title based on the comments. I recall the name, but never realized this is where it was.