Alright, first of all, I love the ease of use that my HD400 has given me to record.  I have KRK powered monitors and it sounds absolutely fantastic.  My questions are as follows.  MY setup is a POD HD400 direct into a PC for recording, using Reaper.  I recently bought a mixer to be able to use my drum machine, vocal mics, and keyboards.  My issue is when it comes to getting my drum machine to show up and record on Reaper.  I have tried many hookups,(and will continue) but havent found how to get it to direct record to my DAW.  The drum machine works fine thru the mixer.  Havent tried keyboard yet as I want to solve one problem at a time.   Do I need to get a quality soundcard for my PC?  It sounds like that would complicate things considering the POD is an audio interface.  Any solutions??