* Right-click on the attached thing.mp3, select Save As
* Click on the Save button at the right-hand end of the attachment pane
* Message -> Attachments -> 1 Podcast title - Podcast name.mp3 -> Save As

      $ cat podcast-name.mp3.desktop

Since the (recent) upgrade to 45.2.0, I have been unable to save .mp3 podcasts attached to items in my RSS feeds. None of the normal methods work any more: * Right-click on the attached thing.mp3, select Save As * Click on the Save button at the right-hand end of the attachment pane * Message -> Attachments -> 1 Podcast title - Podcast name.mp3 -> Save As In all cases, the body of the RSS feed item text is replaced with a player widget, and the mp3 is downloaded somewhere in the background. The player widget does work - I can click on the play button and hear the podcast - but I can't save it locally (for uploading to my phone). Right-clicking on the player widget and selecting "Open message in containing folder" fails to open the file browser, Nautilus. I have even tried changing the setting in Preferences -> Attachments, Incoming, MP3 audio to "Save File" without success. In all cases (ie. all RSS feeds), I was able to save attached .mp3s locally on the previous version of TBird. I have found a work-around, though it is painful: 1. Open the Nautilus file-browser 2. Drag-and-drop the attachment into my home directory. This creates a podcast-name.mp3.desktop file. 3. From the command-line: $ cat podcast-name.mp3.desktop 4. Oh look! There's a URL, but it has quite a lot of stuff on the end, like this: &type=audio/mpeg&filename=... 5. Click-and-drag over the good bit of the URL, up to and including the first .mp3 6. Copy and paste the URL into Firefox 7. Save as. Tah-dah! Thunderbird 45.2.0 Ubuntu Gnome 16.04.1