Dolby-Prologic Filter for Media Player Classic ?

[jonathonsunshine]

Howdy yall, I recently got my self a 5.1 speaker system, (Logitech z5500 ) and have been messin around with various configurations. I have opted to bypass the the on-board dolby/dts decoding and use my sound card through the 6 analogue channels cause I got a kickass Creative soundcard with a 10 band equalizer.

Anyhoo, MPC Home Cinemas inbuilt dts and dolby decoders do a dandy job splitting the sound up but when i play 2 channell anything it just goes to front left and right. I can enable Pro-Logic on the speakers but I would really prefer it if I didn't have to switch it over all the time. Also, my sound card has Creative CMSS-3D which is basically not very good.

Is there a filter I can that will take 2 channels and decode them into 5.1 using the actual ProLogicII algorithims ? Also preferably, one that will let 5.1 go through untouched ?