Hi. I was using Renoise and was trying to record drums using a friends drum pads (going as input audio not midi) but the thing was that I did not manage to find a function to get playback (hearing, eh to hear what I play). I read the wiki page about audio recording but either I missed something or it isn’t there.
You can record your audio input in the sampler
http://tutorials.renoise.com/Renoise/SamplingInRenoise
There is a speaker button to the left of the VU meter, if you enable it, you can preview your input.
Beneath is the list of your input channels that you can use, below that (if you wish to use it) is the fx-chain that you can select to apply (fx chain used in a specific track).