Las Vegas- There are all sorts of enticing interactive invitations at the AVN Adult Entertainment Expo, and one of the more novel is the Audio Orgasm contest. And you don’t even have to be physically present at the Expo to enter.

The contest is presented by FreeAudioXXX.com, and top prize is $1000 (although it says $500 on the website). If you’re at the Expo, visit the booth, step into the plexiglass recording studio and do your thing over the phone, where it will be recorded for the site and the contest. The contest, which will take place live at 4:15 p.m. on Friday at the Fyre.TV stage at the Expo (remember, all events will happen in PST, which is Porn Star Time), is open to both ladies and gentlemen, I’m told by a spokesperson who identifies herself only as Giselle.

The bar for the contest has already been set: Lovely porn star Aurora Snow [pictured] (who will be contributing to our Porno Blog), gets the ball rolling with a slow-to-boil, ears-only Big-O demo at the website, and accomplishes a great deal in 60 seconds. As of Friday evening, it seems amateur contestant Jennifer –whose purring, cooing, whimpering entry lasts an enviable 3 minutes — is in the lead with five plays and a rating of five stars.

Giselle enthusiastically describes the uses for the subscription-based service, which offers female porn stars telling sexy stories and scenarios in 2- to 4-minute bites via your cellphone or computer. “You can listen to it in places where you can’t ordinarily access porn,” Giselle says, helpfully. “Like when you’re waiting in a long line at the bank? Or during that 20-minute commute?”