How do you set an existing file path for a file field, in Drupal 7? The only option I see is to upload the file again.
In Drupal 6, FileField Sources seems to do this.
I just discovered that this can all be done with the media module. I also have mediaelement installed. However it is not completely intuitive, so here are the steps I took:
Import to media library:
mediafile asset field. This allows you to attach from the library.
Display formats (example for audio) are at
/admin/config/media/types/manage/audio/display/, instead of content type "manage display" which only provides "large", "small", "preview", etc.