Audio Problem in VirtualBox (Win81x64/Haswell)

[CurlyBird]

Hello,

I installed Niresh's OSX Mavericks on an ASUS Laptop in the latest VirtualBox,
following the detailed instructions at MacBreaker.

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Hardware:       ASUS N550JK
Processor:      Intel Core i7-4710HQ
Video-1:        Intel HD Graphics 4600
Video-2:        NVIDIA GeForce GTX 850M
Audio:          Realtek High Definition Audio
Memory:         16 GB DDR3 SDRAM
Host OS:        Windows 8.1 (64bit)
Guest OS:       OS X Mavericks 10.9.0 ? (Niresh Distro)
VirtualBox:     4.3.14r95030
---------------------------------------------------------------------

Everything* worked pretty much flawless, by carefully setting up the VM.
The only thing that doesn't work is Audio. I get weird clicking and
other noises when changing and typing in terminal. I have tried changing
stuff in the Audio settings, but the problem prevails and the noises
change only slightly. Also at one point when trying mess with VoodooHDA
settings, there must have been some kind of kernel crash as the machine
suddenly refused to respond and CPU at 100%.

So my first guess is that I don't have the right kernel drivers for the
Audio provided by the VirtualBox machine. The second guess is that

I'm just clueless as to what the correct Audio settings should be for

both OSX and VB to communicate.

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The VirtualBox Audio settings are:
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Host Driver:  
          Null Audio Driver
        * Windows DirectSound

Controller:
        * Intel HD Audio
          ICH AC97
          SoundBlaster16

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And on the OSX "Sound" settings side they are:
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Sound Effects:
          Speaker (Black Unknown)
        * Headphones (Green Front)
          SPDIF-out (Black Rear)
Output:
          Speaker (Black Unknown)       Apple speaker port
        * Headphones (Green Front)      Headphone port
          SPDIF-out (Black Rear)        Optical digital-out port
Input:
          Microphone (Pink Front)       Microphone port
          SPDIF-in (Black Rear)         Optical digital-in port
          CD (ATAPI)
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And on the OSX "VoodooHDA" settings side they are:
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        * 1: Speaker (Green Rear)
          2: Headphones (Green Front)
          3: SPDIF-out (Black Rear)
          4: Line-out (blue Rear)
          5: Microphone (Pink Front)
          6: SPDIF-in (Black Rear)
          7: CD (ATAPI)

        *  /AppleACPIPlatformExpert/PCI0@1e0000/AppleACPIPCI/HDEF@5

[ ] Use SSE2
[ ] Enhance stereo

---------------------------------------------------------------------

I have no idea what would be the proper settings for this controller.
Any suggestions?

Please note that I'm new to OSX and have little experience and
understanding of how to find/use/install Kext files and editing plists.
So any help would be much appreciated.

* Well, "Everything" apart file/folder and clipboard sharing, since there still are no official VB Host Additions for OSX.