Terrible audio quality in 5.1 mode

Hi !
This issue has been here for a while, but it's only now that I come to try to get a fix for it ...
So, it's been a few version that I've noted that the sound was really bad when playing videos on youtube and came to realize that this was fixed when I switched my audio configuration from 5.1 to just stereo in the windows configuration.
I've searched a bit and it seems that flash proudly converts stereo audio sources into 6 channels using the Dolby ProLogic II algorithm. This would probably be fine if it was customizable and de-activable, which it is not right now.
From what I hear, my subwoofer is overloaded with sounds and seems to be used to play low-medium sounds rather than just the deep basses it's meant to.
I have also noticed that, in the sound configuration of windows, I can specify whether my satellites have a broad spectrum or not, but this doesn't seem to change the issue.
Sure, I can get my audio quality back by going to the windows sound configuration and switch to stereo, but I don't want to do that everytime I use flash and then change it again everytime I play a movie or a video game.
The simplest way in my opinion would be to have an option to disable that audio conversion in the flash client.
In case the algorithm for upgrading stereo to 5.1 is customizable, could we perhaps also get access to these parameters (for this kind of algorithm, I would really expect a way to specify the ranges for the individual speakers)
Thanks,
WishGate.

Standard track height:
and no waveform. Now extend it vertically,
and voila, the whole waveform. Just drag down the bottom of the audio track to make it wider (vertically) and there you are.

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