
My current setup, Core i5 2500K with GA-p67A-UD3R
So, my Logitech Z-5500's are currently hooked up to on-board S/PDIF with Dolby Digital Live 5.1
This is my current setup for Gaming and Music
and for movies i manually select encoded audio - usually DTS Digital 5.1 1500Kbps [ Dolby Digital Live 5.1 - disabled ]
most of my movie archive is in .mkv 720p DTS 5.1 1500Kbps
My preferred music setup on-board Dolby Digital Live 5.1 - enabled
FLAC 44.1KHz 16-bit re-sampled by SoX re-sampler foobar DSP to my on-board default 48KHz 16-bit
No other active DSP / No EQ
Surround Sound on Movies are simply - Awesome [ Decoder LCD: Input - Optical Effect: DTS Digital ]

Playing CoD 7 and NFS - HP 2010 - Is a real Joy [ Decoder LCD: Input - Optical Effect: Dolby Digital ]

*** So my question is; can i improve on my music listening experience significantly

These two cards are available on my Local store and i can afford 🙁
Look, I am well aware of that this setup is not a audiophile grade system but
When i listen on my UE Triple-Fi with this decoder i really feel what is missing from my music 🙁
Is there any other way to improve on my current music listening experience significantly on this setup ??
Without degrading my current Movie and Gaming Surround - under 250$ USD
I can even get a X-Fi Titanium Fatal1ty Champion if it's worth the extra money with my Logitech Z-5500 system -

Please help me with your expert opinion, Thank you