Audio Channel issue

If i play back ANY audio file, be it MP3, CD, something I've purchased from the iTunes store, it doesn't matter, I get a static hiss on the left chanels. Right ones are clear.
Everything was fine under iTunes 6x but as soon as they went to the 7x version this appers. I've tried uninstalling iTunes and going back to the 6x version, updating the lastest version of iTunes whenever its available in the hopes that it's fixed, I've even made sure my DirectX drivers were current.
I have no extraneous audio software on my system other than winamp. However, it should be noted that any other audio software, such as media player or winamp, doesn't have an issue with the audio files themselves.
Anyone got any ideas?

Pancenter, thanks once again.
Sorry about delay replying - have had an internet outage here just to add to my woes haha.
Anyway, the good news is that I think I've cracked it:
After updating the OS per your suggestion, uninstalling both Audacity and the m-audio (profire 610), and lastly resetting defaults on sys audio midi prefs I was still experiencing this problem - just on a line-in to Garageband. Pure frustration.
So eventually I just elected (in lieu of chucking the hardware out the nearest window lol) to do a cold re-install of the OS (erase and install option, backup hdd done). As I bought the iMac in January the OS is 10.5.5 I think.
After install, before doing anything else at all, I opened Garageband, set up an audio track and set input prefs to Line in Stereo 1/2 etc, and hooked up the tape unit via rca and the line-in port. The result? Perfect 2-channel stereo.
My personal theory is that the problem was created by the audio interface installation - an m-audio "profire 610" - Tho Audio interfaces are a frickin minefield anyway between Macs and PCS, chipset compatabilities, dodgy beta drivers, worthless gadget-hawking etc etc... I also realised that while my first original attempt was on Audacity I had already installed the profire unit just immediately before (but didn't use it). I doubt it was Logic which is designed specifically for the mac - I feel this theory might be proven when I reinstall these.
So there you go - get the Audio interface right it seems.. And I've got stereo audio.
Thanks for your help and input Pancenter - much obliged.
Peace.

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    Pancenter, thanks once again.
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    Power Mac G5 Dual 2.0 gHz    
    Power Mac G5 Dual 2.0 gHz    

    All the pods are set to master. I've never set any sub-mix tracks in the
    past, and, yes, these are set to zero (but I didn't do it). I set the submix
    to 3 for each Stereo & Mono in project settings, default sequence.
    Made no difference.
    Original audio is standard from a Sony professional camera. Same
    camera I've used on a number of occasions.
    What baffles me is that I just don't understand the error message
    language. In other words: what is it saying?
    Cheers,
    Bill in Toronto
    Date sent:     Thu, 20 May 2010 10:37:47 -0600
    From:     Bill Hunt <[email protected]>
    Send reply to:     [email protected]
    To:     William McQueen <[email protected]>
    Subject:      CS3 Error Message The number of audio channels in
         the output need....
    OK, the Master is Stereo, and you have 3 Mono Tracks, that should
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    Now, it appears that you have no Sub-mix Tracks. Is that correct?
    Check to see what the Track Mapping is set to for each of those Mono
    Tracks. They should be set to Master.
    Having the Track Mapping set improperly could possibly result in this
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    streams and these are well-defined.
    Maybe someone else will have more ideas for you.
    Good luck,
    Hunt
    PS - as a note, one cannot use ADL to Encore, if the Master is DD 5.1
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    encoder plug-in to get a DD 5.1 SS AC3. That does not seem to be
    your case though.

  • 5.1 AC3 Audio Channels - Remapping

    Greetings,
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    This has been an argument, discussed since at least PrPro 2.0.
    Going back to about that point (when Minnetonka Audio offered a discount for PrPro users), Minnetonka Audio basically opened up their books to me, when I inquired about volume licensing. I do not recall the exact prices, or even the discount, but the Dolby Labs' charge was most of the cost, and Minnetonka Audio only made about US $50 per SurCode plug-in.
    Now, with the Minnetonka Audio SurCode, one CAN use the DD logo, when certain criteria have been met. With most other 5.1 SS Encoders, they are NOT certified DD, so cannot legally display that logo. Sony, with their Vegas NLE's, seems to be an exception to that restriction. I am not sure what the legal issues are, but Sony does (or did) create DD 5.1 SS, with some of their programs. Perhaps some sort of "brother-in-law deal" with Dolby Labs?
    To some editors, having fully legal DD logos is not important to them, or to their clients. In those cases, there are a few other methods (though somewhat convoluted), to Export 5.1 SS AC3's, just not DD-certified.
    I used the DD 5.1 SS enough, that I bought a license for each computer, and felt that my $ was well-spent. As you, and others mention, paying the licensing fee to Dolby and Minnetonka Audio, if one never uses the SurCode plug-in alters the price-point of the program, and all users will be paying more, whether they derive any value, or not. To me, it has more than paid for itself.
    It would akin to Adobe including the full Red Giant Magic Bullet Looks suite in their program. Price would go up, and many users would never need that, or want it.
    If asked, my vote would be to keep things, as they are, and those who want/need the SurCode plug-in can buy it.
    Hunt

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