4.1 channels of audio?

[18000rpm]

I am running a 4.1 channel setup (no center). In XBMC, I found a file asound.conf under XBMC\system which allowed me to change the audio matrix like this:

# downmixing to 2 channels
pcm.xbmc_51to2 {
@args.0 SLAVE
@args.SLAVE {
type string
default "default"
}
type plug
slave.pcm $SLAVE
slave.channels 2
route_policy duplicate
# ttable.0.0 1 # front left speaker
# ttable.1.1 1 # front right speaker
# ttable.2.0 0.7 # rear left speaker
# ttable.3.1 0.7 # rear right speaker
# ttable.4.0 0.7 # center to left mapping
# ttable.4.1 0.7 # center to right mapping
# ttable.5.0 0.5 # LFE (base) to left mapping
# ttable.5.1 0.5 # LFE to right mapping
ttable.0.0 1 # front left speaker
ttable.1.1 1 # front right speaker
ttable.2.2 1 # rear left speaker
ttable.3.3 1 # rear right speaker
ttable.4.0 0.7 # center to left mapping
ttable.4.1 0.7 # center to right mapping
ttable.5.5 1 # LFE (base) to left mapping
}

This maps the center channel audio to the left and right channels.

Is there an equivalent file or function for this in Boxee?

I can't find the same file or any file with the same content as XBMC's asound.conf.