Sennheiser PC 136 USB headset in MAC OS 10.8

Dear Apple support,
I'm having troubles with my old headset which just appeared after my 10.7 -> 10.8 MAC OS upgrade few weeks ago.
http://www.sennheisercommunications.com/
Problem description:
The system somehow doesn't recognize and switch by default audio INPUT/OUTPUT when connecting such USB set into my MAC book air. In the past it worked differently, as I expected, when I connected such USB head set it switched primary audio IN/OUT into it and internal MACbook reproductors/microfon has been disabled.
As kind of annoying workaround I every time (for every single application - skype, icq, chrome...) have to find audio options and switch IN/OUT device which is btw correctly recognized as "Sennheiser USB audio".
So I know, this is tricky, but didn't you know about some fix for this?
Thank you very much and appreciate your help
Pavel Zak
[email protected]
+420739587886

Should work on a Mac, go look at
http://www.senncom.com/comm/icm_eng.nsf/resources/FCS_PC136_USB.pdf/$File/FCS_PC 136_USB.pdf

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/p

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Manufacturer: Logitech
Product ID: 0x0a01
Vendor ID: 0x046d
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Phil Huse-
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http://www.ventrilo.com/forums/showthread.php?t=37302
http://forums.worldofwarcraft.com/thread.html?topicId=17367983174&sid=1
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http://forum.skype.com/index.php?s=d9c3718b7185c8e1caee585c248c3bab&showtopic=75 528&st=40
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Message was edited by: Jaycyn

I have a 27-inch i7 iMac running 10.6.2 and I can confirm that replacing the kernel extension from 10.5.6 works just fine. I had been having this problem every since 10.6.2 (for some reason it worked up until then). I don't think this fix will work if you are booting with the 64-bit kernel (the default on ALL macs is to boot the 32-bit kernel so you would specifically have to be doing this). I haven't tested it in 64-bit though.
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1) Download the AppleUSBAudio.kext from 10.5.6 from the following URL.
http://evo-wiki.cern.ch/twiki/pub/FAQ/AudioProblemMacOSX1057/AppleUSBAudio.kext. zip
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cp -Rp /System/Library/Extension/AppleUSBAudio.kext ~/Documents/AppleUSBAudio.kext-BACKUP
5) Exit any applications that are using a USB audio device and unplug all USB audio devices.
6) Unload the existing AppleUSBAudio driver from the kernel by running the below command in terminal.
sudo kextunload /System/Library/Extensions/AppleUSBAudio.kext
If you get an error saying " not found for unload request" your fine. If you get an error claiming it can't be unloaded because its in use (don't have the text in front of me) then stop and go back to step 5.
7) Remove the existing driver by running the following in terminal.
sudo rm -rf /System/Library/Extensions/AppleUSBAudio.kext
8) Put the new driver in place by running the following in terminal.
sudo mv ~/Download/AppleUSBAudio.kext /System/Library/Extensions/AppleUSBAudio.kext
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sudo kextload /System/Library/Extensions/AppleUSBAudio.kext
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141 0 0x96c6f000 0x28000 0x27000 com.apple.driver.AppleUSBAudio (2.5.8b13) <95 94 30 14 8 7 5 4 3 1>
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NOTE: Jaycyn I have tried to post this to your WoW forum post of the same issue (http://forums.worldofwarcraft.com/thread.html?topicId=22048900603&postId=2204747 77020&sid=1#18) as that is how I found this thread and the solutions but there is something messed up with my forum account preventing me from posting to the WoW forums.

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Logitech USB headset

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Hi
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