hsc3-0.12: Help/UGen/IO/soundIn.help.lhs
> Sound.SC3.UGen.Help.viewSC3Help "SoundIn"
# composite
> import Sound.SC3
Copy 5th input channel (index 4) to 1st output channel (index 0).
> audition (out 0 (soundIn 4))
Copy input from 4 & 5 to 0 & 1.
> audition (out 0 (soundIn (mce2 4 5)))
IO matrix: 0 1 2 3
0 *
1 *
2 *
3 *
> audition (out 0 (soundIn (mce [0, 2, 1, 3])))