Hi!
I am haviong sound quality problems since 1.4 update. There are hiss and click when playing some movies. Gun fire sounds double so terrifying now… 
Normal speech is OK.
It might be related to the audio boost in 1.4.
Anyone else having problems like that? Is there a way to turn this feature off somehow?
Thx
Which audio options do you have enabled in the Media --> Settings --> Playback menu?
Are you connected to a receiver or just a TV?
Dolby Digital AC3, DTs are disabled, Volume control enabled, Center channel boost is disabled.
The setup is following: ATV2 connected to the TV, sound is connected from the tv to the 2.1 speakers via 3,5 jack.
First I suspected the speakers. But when I connect the speakers to my laptop and play the same movie the sound is fine.
Than I thought there is a problem with the TV, so I watched some trailers from the itunes store and did not experience the same problem.
These movies, I have tested some, have played fine earlier.
Just transcoded 5 minutes of a movie and played it back using itunes. It was fine.
Im quite sure, there might be something within the update.
Hmm, would you mind sending in a bug report?
A sample file that exhibits this issue would also be very helpful.
All done, diag info, bug report, sample file submitted.