Please note that running "regsvr32 wmp.dll" on Vista breaks a number of
things.

You would have to at the least reset all the following. Please try to avoid
registering wmp.dll on Vista. Thanks!
==
Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA70-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA71-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WMZ"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA72-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.AIFF"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA73-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.AU"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA74-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MIDI"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA76-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MP3"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA77-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MP3"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA78-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.M3U"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA7B-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WAV"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA83-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WAX"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA84-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WMA"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA88-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.AVI"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA89-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.MPEG"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA8F-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA90-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA92-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASF"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA93-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.ASX"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA94-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WMV"

[HKEY_CLASSES_ROOT\CLSID\{CD3AFA95-B84F-48F0-9393-7EDC34128127}\ProgID]
@="WMP11.AssocFile.WVX"

[HKEY_CLASSES_ROOT\CLSID\{EE4DA6A4-8C52-4a63-BBB8-97C93D7E1B6C}\ProgID]
@="WMP11.AssocFile.WMD"
===

--
Speaking for myself only.
See http://zachd.com/pss/pss.html for some helpful WMP info.
This posting is provided "AS IS" with no warranties, and confers no rights.
--
"Bozar" <Boltizar_ ~nospam~@msn.com> wrote in message
news:1C44426B-2250-487D-988C-71FFFD6005CF@microsoft.com...
> Well with no ones help on my thread here, I did fix the problem, Some one
> else back in early September had a similar problem, they were directed to
> this address,
> http://support.microsoft.com/kb/938928, it was close but not my problem,
> so
> I type in "Windows Media center Audio error" in the serch box took me then
> to
> me to TechNet Forums with others having the same erorr 80040155 and there
> is
> a hot fix that worked great for me.
> In Accessories, Right click on Comand Prompt Run as administrator, in the
> command prompt, type or paste C:\WINDOWS\system32>regsvr32.exe wmp.dll and
> (make sure to put the space in between 32 and wmp)
> An info box will appear. Click Ok then restart.
> Bingo! it worked,
> Thanks to TechNet Forums.
>
>
> --
> Truckin'
>
>
> "Bozar" wrote:
>
>> Windows Media Center on Vista Home Premium, When I access my Music
>> library and
>> when I pick a song or album to play, It gives me a error, "unknown audio
>> error has occurred 80040155." now video's play fine with there music.
>> CD's
>> will not play either, I get the same error. Windows Media Player 11 plays
>> fine for music and videos.
>> --
>> Truckin'