Tactics ogre : Let us cling together

[DrPastah]

v0.9.8-1351-g756ad88
64-bit on Windows 7

Here's my PC's build
http://ca.pcpartpicker.com/p/pbdrmG

I'm having my BGM stuttering sometimes in the game, tried a bunch of settings to get it fixed but I couldn't get it fixed.
I think the SFX is interrupting the BGM somehow thus making it stutter.

Here's a video of my problem: http://www.youtube.com/watch?v=zrTbiTA7e60
A longer video: http://www.youtube.com/watch?v=5nsB3XomSmA

The red coloured errors seem to show when the stutter happens. http://i.imgur.com/4N71h2j.png
So basically this gets printed for every sound stutter:

PHP Code:

08:20:061 taco_thread  E[KERNEL]: HLE\sceKernelThread.cpp:2468 sceKernelTerminateThread(291): already stopped
08:20:070 taco_thread  I[KERNEL]: HLE\sceKernelThread.cpp:2244 sceKernelStartThread(thread=291, argSize=4, argPtr=0bfff430)
08:20:163 bg thread 0  I[KERNEL]: HLE\sceKernelThread.cpp:2284 __KernelReturnFromThread: 0