Possible to Adjust Airplay Lag to Sync Multiple Airplay Speakers?

Question

When playing to 2 different ATV2s, my iTunes music is not in sync between two sets of speakers.  Is there anyway to adjust the lag time to one of the ATVs?
Here is my setup:
- Living Room - one ATV2 hooked up to my TV via HDMI, with powered speakers hooked up to my TV's audio output;
- Bedroom - one ATV2 hooked up directly to powered speakers (only used for music).
After reading through the forums, I am fairly certain the sync problem is due to the extra time my TV takes to process the audio signal before outputting the audio to the connected speakers.  But what I have not been able to find is a solution to this problem.  Basically what I need to do is delay the signal to the bedroom ATV maybe 0.5 seconds.  Are there any 3rd party applications that can fix this?  Will Apple ever release a solution?

Answer 1

I just found something out about the Rogue Amoeba software Airfoil on another thread here. People are complaining that there is something wrong with the Pioneer recievers (my reciever as well) as this is where they experience the delay. I don't think they understand that the reciever, like your TV, is processing the signal before it outputs it to the speakers as opposed to basic powered speakers that just shoot the signal out. Anyway the aforementioned software has an option to delay the signal of the individual airplay devices. I have used this software before and it has given me fits with much more severe sync issues in the past, but that was years ago now, so maybe they have fixed that. I haven't tried it recently.  Anyhow, here are the instructions I found for individually syncing the devices using the Rogue Amoeba Airfoil;
We do offer a manual sync adjustment, as a debugging tool, in Airfoil. Please note that this is not supported for everyday use - on a network which is functioning properly, it shouldn't be needed at all. That said, you can try it if you like.
To enable the sync adjustment, follow these steps:
1) Quit and re-launch Airfoil while holding down the option key. This will bring up the debugging window.
2) Turn the Sync Adjustment debugger to On, and click Done.
Now each remote speaker will have an additional slider below the volume slider - that's the sync adjustment. The center is 0 offset, and the ends are +/-1 second. Adjustments only take effect when connecting, so if you're experimenting with it, you'll need to disconnect, adjust, and then reconnect to see how well it worked.
Airfoil will remember your adjustments after you quit, even if you turn Sync Adjustment off. (All that does is enable/disable the GUI, not the adjustment settings.)