audio mixer(s) / decompressor

[Exii]

Question 1: I am currently using Dfx audio enhancer (fxsound); is there a more viable option for producing better quality 3d surround sound?
Question 2: There is a feature in dfx listed as "use mydocuments", what could this possibly mean? This seems like it could add way more options by allowing me to write an .ini file of sorts that could be read by dfx.
Thank you for your time and remember that Linus is always watching over us *insert praying-hands*