Uploaded audio gets overwritten by auto-archiving

[troff]

If a host uploads the audio for a program in advance, the audio appears on the episode UNTIL the program airs. At that time, the audio gets overwritten by the auto-archiving script.

There should be a conditional added to the script that checks if there is existing audio on an episode, and then make the auto-archived mp3 an attachment in ADDITION to the existing audio, instead of replacing it.