void nuAuSndPlayerSetFXMix(u8 fxmix)
fxmix Effect Mix Value (0-127)
Set the effect mix of the sound object for the sound player. If the value is 0, the sound is completely dry and if the value is 127, the sound is completely wet.
This is used immediately after the nuAuSndPlayerPlay function or after specifying the sound object using nuAuSndPlayerSetSound.
If the sound is currently being played back, the wet/dry mix values are modified. If the sound is not being played back, it affects the wet/dry mix values of the sound when it is played back in the future.