DVD audio component refuses to work in XP...

A friend of mine asked me to help him understand why he had no audio on his Windows XP PC.  Initial investigation revealed that the audio input to his speakers was plugged into the built in green audio port on the motherboard, while somebody had installed Soundblaster card at one time.  Moving the audio input plug into the Soundblaster resolved ALL the audio issues BUT one.

Everything plays EXCEPT for the audio on his multimedia DVDs.  At first he was using the Interactual DVD player and was getting no audio.  I re-routed his default DVD player to Windows Media Player 9, which also played the DVD with no audio.  We tried a couple of other DVDs which we know DO HAVE working audio, but to no avail.

Everything looks kosher in Device Manager, and not audio inputs or outputs are muted in the Windows Audio controls, so I'm kind of wondering what else to look at if the DVD audio just refuses to work. BTW, the DVD VIdeo works just fine, so...???
syd_rabinAsked:
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SJH01Connect With a Mentor Commented:
Are you using digital or analog audio from the drive? By default windows uses digital. You can test analog by going to Control Panel > Sounds and Audio > Hardware > Properties. You may need to have an an audio cable from the drive to the audio connector on the system board (or audio card).

Another popular fix is downloading VLC player @ http://www.videolan.org/vlc/

It offers a broad range of codecs that have helped other with video & audio playback issues.

Good luck and post your updated comments.
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FunkyBrownCommented:
I would give a shot at trying an audio CD in the player and seeing if that plays normally... if not, then that points to something I remember when I was cracking open machines, which is that sometimes there's a cable that runs straight from the DVD drive to the sound card/motherboard that carries the audio stream.  I think it's just a two-pin wire that runs, we could probably confirm if you post what type of dvd drive it is.
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syd_rabinAuthor Commented:
An audio CD definitely does play from the SAME drive where the DVD has no audio from, that is why I am puzzled.
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syd_rabinAuthor Commented:
Thank You.
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SJH01Commented:
@syd_rabin - What solution did you use to fix your issue?
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