Update patch.txt (optional 2-ch. audio fix)

[nastys]

Added koenji'sBrolijah's audio fix (disabled by default)

[samyuu]

@Brolijah was the one to originally come up with this patch not koenji.
I am not sure how to deal with the audio issue, sorry but for now I'll leave this open.

[nastys]

Oh, fixed. Anyway, I just added the 2-ch workaround (disabled by default) to patch.txt purely for convenience.

[vladkorotnev]

Speaking of audio, does the game explicitly use the Realtek APIs of some sort?
I'm tempted to use something like an ESI Juli@ (if I can fit it in the real hardware) instead of the noisy low power built in audio, but not sure if it will work?
Sorry for hijacking.