The Link on NFL.com also works
The link to the game audio on the nfl.com score page is up and operational.
I paid the money a week ago. Apparently, RealAudio "remembers" my log in stuff, because all I had to do to get the audio stream to play was to click the link. (i.e. no log in procedure, user name or password was required).
One word of caution - during the commercial breaks there's "dead air" and you might think that the link was broken. Just be patient, go get a beer, read a good book etc. When the break is over, the silence ends and program commences.