I have a content type video. It has some fileds for file meta data and a file upload field. Upload and display works fine.

Now I want to add a second video file to this content type. This file can either be uploaded or selected from a select field.

So you can select a previously uploaded file or add a new one. The select box should show all files that where added for any post with content type video.

Any ideas how to do this? I am using drupal 6.