The progressive network Air America tonight scoops up the slings and arrows it aims at President Bush and moves them to its new home a few blocks downtown. Starting tomorrow, Air America will be heard on WWRL (1600 AM), ending a 29-month run at WLIB (1190 AM). -snip- The move to WWRL will reduce Air America's coverage in some parts of the metropolitan area, since WWRL's signal isn't quite as strong as WLIB's and there are areas where it is hard to pick up. Questions continue to circulate about the financial health of the network, which has experienced cash crises...