Here’s the link: http://www.chicagohistory.org/static_media/CHM-CrossroadsTour.zip
Save it, then open it up with “WinZip.” If you don’t have it, you can download it very easily at http://www.download.com/WinZip/3000-2250_4-10665474.html?tag=lst-0-2 . Ask your parents BEFORE you download any new software, though it’s very safe and a relatively small file.
This will open LOTS of mp3 files (almost 30 total!). They are divided into sections that are 1 or 2 minutes a piece, and cover a specific subject (‘L’ trains, explorers, music, protests, riots, etc). You can listen to them all, or pick the ones that seem interesting… tell you what, though – they are a LOT more interesting when listening to consecutively.
Have fun with them… they SHOULD make more sense tomorrow!