You can, of course, record into your field recorder while sitting at the computer, then copy the files over when you're done and sync them up with whatever. But, it's a lot easier if you can just plug the recorder straight into your computer and then record your audio in something like Adobe Audition or Reaper. You can even preview effects, such as compression and EQ this way. So, USB Audio Interface capability will be important if this is something you need.