Hilary Rosen will forever be remembered as the hackiest flack of them all–shilling for the record industry during the Great Napster war of 200-2003 as head of the RIAA, demonizing file-sharing and generally taking the most extreme position possible on behalf of an industry that combined avariciousness and stupidity in a way that wouldn’t be seen again until the housing loan debacle that sparked the current financial meltdown.

Rosen was there on the front lines as the industry accomplished the neat trick of holstering up, pulling out its guns, sticking its head in the sand and firing wildly … managing only to shoot itself in the foot. She  was no Jack Valenti: In the years since, as we’ve seen, sales have declined 45 percent, the labels are facing extinction, and it couldn’t have happened to a nicer group of people.

Anyway, since her disastrous years with the RIAA, Rosen has tried to rehabilitate her image by letting it be known that she was a voice inside the organization for accommodation and trying to position herself as a liberal commentator on the cable news networks. Most recently, she’s been calling herself “political director” of the Huffington Post, whatever that means.

And now … she shows her true colors, and will be a “strategy adviser” in DC for the Live Nation/Ticketmaster merger. I just saw my friend Jim DeRogatis talking about it on his blog, but it seems it was first reported by the NY Post. (More detail on her lobbying firm in this WashPo story.)

Is there anything worse than a corporate Democrat? (Wasn’t it one of the South Park boys who said, “I don’t like conservatives, but I really fucking hate liberals”?) Having spent years whispering into the ear of the RIAA as it embarked on its calamitous, destructive and pointless legal war on file-sharing, Rosen’s now going to be brushing lint off the labels of the creepy monopolists as they look innocently into the cameras and skulking around Washington to sneak the merger through a new Democratic administration.

The new Live Nation is shaping up into a real rogues gallery; hard to find the comparison, but it’s a little like Enron merging with Blackwater and bringing on Dick Cheney to run things and Baghdad Bob to lobby Congress.