Here are the places I know:
Toledo, OH: nothing!
Ann Arbor, MI: Encore on Liberty Street is excellent. Wazoo is also good on State Street.
Dearborn, MI: Dearborn Music is great! Not as great selection as in Ann Arbor, but there's always something great there. Location is on Michigan Ave. There is apparently another store in Canton, but I've never been there.
Ypsilanti, MI: nothing!
Bowling Green, OH: Finder's has some selection. It's located in Main Street, downtown.