Redownloading where enclosure changes but guid stays the same.

[kenfallon]

There is a issue with the No Such Thing as a Fish podcast redownloading previously downloaded shows.

This seems to be linked to castget using the enclosure and not the guid for uniqueness.

[No_Such_Thing_As_A_Fish]
spool=/tmp/No_Such_Thing_As_A_Fish
url=https://audioboom.com/channels/2399216.rss

Between 2026-02-19_14-28-16_CET_2399216_rss.xml and 2026-02-26_13-34-06_CET_2399216_rss.xml the enclosure changes but the guid stays the same.

From:

<enclosure url="https://pdst.fm/e/arttrk.com/p/ABMA5/pscrb.fm/rss/p/prfx.byspotify.com/e/dts.podtrac.com/redirect.mp3/audioboom.com/posts/8835878.mp3?modified=1768586457&amp;sid=2399216&amp;source=rss" length="0" type="audio/mpeg" />
<guid isPermaLink="false">tag:audioboom.com,2026-01-16:/posts/8835878</guid>

To:

 <enclosure url="https://pdst.fm/e/arttrk.com/p/ABMA5/pscrb.fm/rss/p/prfx.byspotify.com/e/dts.podtrac.com/redirect.mp3/audioboom.com/posts/8835878.mp3?modified=1771419256&amp;sid=2399216&amp;source=rss" length="0" type="audio/mpeg" />
<guid isPermaLink="false">tag:audioboom.com,2026-01-16:/posts/8835878</guid>

guid stands for globally unique identifier. It's a string that uniquely identifies the item. When present, an aggregator may choose to use this string to determine if an item is new.

My suspicion is that fixing this will break other podcasts, so I'm not sure what to advise here.

[tonywhitmore]

Hi Ken - it's been a long time!

I've seen this behaviour on other feeds too, and it is related to bug #45 I think. It seems to happen when a modified version of the episode is uploaded. It occurs every so often across multiple feeds. The workaround is to move everything out of the spool directory, and then run castget to re-download everything from the feed. As older files are dropped from some feeds, the only way to be sure not to lose an episode is then to move all the files back, overwriting the downloaded files.

It would be good if there was a switch to force overwriting, or to mark an entry as downloaded without downloading it.