"We recently became aware that some consumers have not been able to enjoy the full audio output in the Nintendo Wii version of Guitar Hero III: Legends of Rock. We are currently working with Nintendo and are planning to issue an improved audio experience in future versions of the game,""We expect to have re-mastered discs available by early 2008 and we will be offering consumers replacement discs at no cost once they become available. We thank all of our customers for their support and patience."
http://uk.wii.ign.com/articles/840/840066p1.html
About sodding time, took them over a month to say anything about the massive flaw in GH3 only playing the sound in...mono. Even has the Dolby PL2 logo splattered everywhere.
Massive 900+ thread on the GH3 forums most certainly helped this, had contact info for everyone to complain, even the CEO's office phone number 
Dolby actually responded before Activision did anything!
Now we just have to wait till "early 2008" for it 
