I am running a managed multisite; one of my clients is a musician with mp3 clips on his home page. Your fine plugin has worked wonderfully for him for the better part of six month, but some time in the past week stopped playing. His site is a domain-masked node on a multisite installation:
Any insights you can share? I have a canonically plain-vanilla multisite install, and haven't found any articles on recent bugs introduced by the release of 5.3.1 core.
Thanks in advance,