Hello All. Recent convert to Reaper. Had the same issue today; could not for the life of me figure out why my "renders" would not play in Sound Forge, Winamp etc. Sho enough 24 bit. Solved that real quick by downsampling to 16 bit. (manuals are good). I suppose I can set Reaper as 16 bit by default, gonna try that next. Anywhoo, I really love using this program. I have been using Sonar 7 and the old Gt Pro 3 for years but now coming to love Reaper. Routing Matrix is the bomb for short term memory issue folks like me.