I can vouch that NW does NOT have IFE on their A-320's.

I have seen NW have IFE audio only on their 757's. It might depend on the length of the flight.

I haven't flown AA since I was a very small child. A front view would be fantastic, but even I would want to turn it off if we were going in nose first.

I have been on at least one UA 727 that didn't have in-flight audio. I have also been on at least one UA 737 flight that must have been one of those 737-200's without audio.

On a UA LAX-NRT, the pilot wouldn't turn on channel 9 to listen to ATC. I always wanted to hear ATC in Tokyo and my one chance I didn't get to! The pilot back didn't turn it on until the end of the flight -- just over LAX. Sort of gave me the impression that the 747 pilots don't want the passengers listening.

A few other UA pilots also have refused to turn on channel 9. It is their option, but it makes you wonder why they don't want you to listen.

I sure wish more of the airlines would add IFE and ATC.