I'm doing an acoustic version of a tune and want to import the vocal part from the earlier version. So, I created and armed a new track, went to "insert," then, "media file" which tool me to my comp files where the Reaper media files were. I clicked on the vocal file and it went to the armed track. There is notation on the track about the media being formatted or something (I don't have it in front of me now). I believe that the file imported is MP3. This must mean that the file that I imported is "post-render." Correct? What are the limitations regarding manipulation of this track? Is the pre-rendered file in the Reaper media folder, under a different name? Thanks.