[Five]

most (read: almost all) recent fm broadcasts are from a lossy source. the fa will look better when its a post-fm source due to noise. the quality of the source files used for open air broadcasts is usually much higher than webcast/satellite quality, and we allow any and all open air sources (so long as they otherwise are okay by the bt seeding rules) even tho we are well aware of the source.

also, you should take a look at the sa, fa is only part of the picture.