Podcast not downloaded properly

[Uddasa]

Sometimes, for unknown reasons, some podcasts are not downloaded properly but Subsonic detect them as "completed".

When that happen, I absolutely don't know how to handle it but to delete the podcast, and then it's lost forever, or to download it manually on my PC and replace the incomplete file.
Is there a way to redownload an item that I'm not aware of from inside Subsonic? Or an easier external way which will not break the database?

Regards,
Uddasa