AAR is not in any serious financial troubles...or no more so than any other broadcast company considering advertising revenues are way down thanks to the crappy economy. Radio stands behind network and cable television, newspapers and now internet in getting the "grease"...thus you hear less advertising and the quality of the advertisers are "bottom feeders".
http://www.radioandrecords.com/RRRatings/That's where you can research ratings...most the AAR affiliates are listed there. Keep in mind these stations are not owned by AAR...most are owned by Clear Channel. That company has a big interest in seeing AAR suceede and ensures the network will stay viable and growing.
There's a lot of disinformation that has been tossed about AAR. I was an early critic of the network's set-up...since I saw financial troubles and their growing pains. See "Left Of The Dial" and this documentary plays out these problems and how they were resolved. Since then the network has found it's footing and is enjoying one of the success stories in a radio world awash in losing stations and formats.
The Sirius/XM situation is also one that helped AAR. They went with a sure deal with XM and this pissed off a lot of Sirius listeners. Previously both services carried some of AAR, but the new deal guaranteed more revenue to go to AAR...thus I would say a stronger financial move...not one of a network in financial distress.
AAR is doing well. It's not ideal and I would love to see other Progressive voices start being heard...but it's broken through to become a steady, viable and popular radio network.