Optical + Headphone Jack

[ajaxburger]

I own a Dell XPS 420 with optical sound on the soundcard. I am trying to record my YouTube play through on Garry's Mod. I am wondering how to have sound playing on both optical and the headphone jack so that my Turtle Beach and my Hauppauge receive input. I usually have to pick which channel to play on so either I don't hear it at all until playback (Hauppauge) or it's not in the video (Headset). Is there anyway I can duplicate the sound channels so that it plays on both or is it even possible?

Specs (They are different than Dell's stock) :
DIRECT EXPORT FROM DXDIAG
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System Information
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Operating System: Windows 7 Ultimate 64-bit
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Dell XPS420
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A02
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 8192MB RAM

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DxDiag Notes
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Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Input Tab: No problems found

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Display Devices
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Card name: NVIDIA GeForce 9800 GT
Manufacturer: NVIDIA
Chip type: GeForce 9800 GT
DAC type: Integrated RAMDAC
Display Memory: 4073 MB
Dedicated Memory: 489 MB
Shared Memory: 3583 MB

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Sound Devices (I WANT TO PLAY THROUGH BOTH OF THESE)
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Description: Speakers (2- High Definition Audio Device)
Default Sound Playback: Yes
Default Voice Playback: Yes

Description: Digital Audio (S/PDIF) (2- High Definition Audio Device)
Default Sound Playback: No
Default Voice Playback: No
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Sound Capture Devices
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Description: Microphone Array (Kinect USB Audio)
Default Sound Capture: Yes
Default Voice Capture: Yes

 

[DarkSable]

Unfortunately, with any form of windows past XP, you can't make the same sound source play through two outputs. You could have it come out a 3.5mm jack and into a splitter, but...

For some reason, they've never implemented that technology, and using two audio sources through two sets of speakers is also extremely difficult aside from their built-in "default audio / default voice."

I've been trying to do something like what you have for a long time, and it's just not feasible.