Here are some links to Twin City area railroad scanners
Southwest Twin Cities http://www.radioreference.com/apps/audio/?feedId=8197
BNSF Willmar Area http://www.radioreference.com/apps/audio/?feedId=1928
East Twin Cities http://www.radioreference.com/apps/audio/?feedId=6541
North Twin Cities http://www.railroadradio.net/content/playlist/twin_north.asx
For more streams, see the following web sites: