Is there a way to keep track of what videos and audio files I used?

[Bugfragged]

...without having to write it down manually.

If I want to append several video files, I don't want to accidentally append the same one multiple time, so it would be helpful to keep track of all the files I used. I tried checking the Application Log and while it tells me that a file was opened or appended via a [HandleAction] line, it doesn't tell me the file name.