Though summer doesn’t technically wrap up for a few more weeks, most of us know to put away the white pants after Labor Day. There will be lots of opportunities to take in outdoor concerts all the way into early fall, but this weekend’s unofficial end of summer is fittingly accompanied by a bonanza of festival action. To name just a few, you’ve got the North Coast Music Festival in Union Park, which collides dance music, hip-hop, jam bands, and indie rock; the grandaddy of the city’s free lakefront music fests, the Chicago Jazz Festival; and on the south side, the always eclectic African Festival of the Arts. You can find coverage of all three in this week’s paper (click those links!), but in case you’ve had it with sun and scantily clad crowds, there’s plenty of indoor action on this week’s Soundboard.