I can't claim to be "in the know" but polite letters requesting consistent treatment with a "cc: FCC" at the bottom should do the trick. If you can cite specific examples where they run political ads from moveon.org and its sister organizations, all the better. No bashing, just a well-reasoned argument. I'd hate to see the SBV ad be sacrificed but if you can force the station into equal truth detection, it might just be worth it; moveon wouldn't stand a chance under those rules. Chances are, though, the station wants the revenue and will air them all.
Would this also be a way to deal with the major networks? I don't know if we would stand a chance of getting them to cover this the way they cover Moveon.org.