This thread is at
http://groups.google.com/group/comp.sys.mac.misc/browse_frm/thread/470845b4a5c8813b#


This is really weird, and I've never seen anyone have this problem.
When I play a CD in my Macbook Pro that has stereo separation panned
hard Left and Right, the instrument that should only be in the left
channel is in the right as well (but to a lesser degree) the reverse
is true for any instrument panned hard right.
When I play the same CD on my CD player these signals are not in any
crossing over to the other channel.
I have already check the UNVIVERSAL ACCESS panel and have unchecked
the "PLAY STEREO AUDIO as MONO" option.
This problem is important because PLAY ALONG CD's for musicians are
mixed so that if you turn the stereo playback hard right you
shouldn't
hear the piano track (hearing only the bass and drums in the left
channel, and if you turn the playback hard left you lose the bass,
(hearing only the piano and drums).
If you're a pianist, you practice with the piano track missing of
course. If you're a bass player you practice with the bass track
missing.
Needless to say, files imported into itunes have this mixed up stereo
leakage problem.
Any one have a solution?


On Feb 11, 1:56 pm, Chris Ridd <chrisr...@mac.com> wrote:
> Is the problem only with the built-in speakers, or even with headphones?


Headphones and well, and any signal coming from the headphone jack
and
routed to external speakers.
__________________________________
Also,

When playing the same "play along" files on my Iphone on external
speakers, when I pan hard left and right, the files sound exactly
like
they should. I conclude the files are encoded correctly in ITUNES.
It seems like some weird hardware issue.