Audiophile in Chicago .....

I have all day Wednesday to myself before a two day meeting in Chicago.
Any recommended audio shops or music stores ? I'd love to find some great blues on vinyl and/or listen to some wonderful high end gear. Where should I go ?
if you're around wicker park, reckless records on milwaukee is a good place to kill an afternoon + decibel audio is across the street and has some nice gear + there are innumerable bars and restaurants. enjoy.
Stay the month and come to AXPONA.