OK, I renamed the existing podcastedit.php to podcastedit.php.bak, and I uploaded the one you gave me.
But it didn't fix the problem. And something wonky is going on.
When I write the XML and check the results, the problem isn't fixed. The ampersands are still present, so the replacement isn't happening. But I looked at the PHP you gave me, and I definitely see the line for the replacement:
$title = str_replace('&',"and",$title);
I also tried adding the improvements I mentioned
here, and those aren't showing up either.
Not only that--in this PHP file, the link and comment fields are being filled with the Study URL. But the XML file ends up with the mp3 link in those fields!
I'm attaching the PHP with my modifications.
Attachment podcastedit-72cbd1b022109dc3f458276a6d2d4760.txt not found