stevygee1987, one of those great WP YouTube Lyte users, discovered that somewhere along the way audio-only embeds stopped working on mobile (iOS & Android).
The root-cause of the problem is that for mobile browsers YouTube does not show the bottom controls any more, even if specifically requested to do so via the iFrame API.
I’m waiting on some bright soul to provide me with a good solution (on stackoverflow, so your upvote might help), but as a temporary workaround audio-only on mobile will be rendered as a normal YouTube video (which YouTube prefers, really, you should not do audio-only if you want to stay within the Terms of Service).
Just for testing purposes, “Alone again or” by Love in a small audio-only embed (unless you’re on mobile, that is);
So audio-only and playlist embedding were broken due to changes at YouTube’s side, but version 1.1.4 fixes that.
Some information for those users that implement WP YouTube Lyte’s audio-only embedding feature; it got broken because YouTube started to enforce the minimal player size they recently added to their TOS. Audio-only is, for many reasons, something that YouTube doesn’t want to support and indeed might even want to block, so this might break again. So if you want to be on the safe side or if you just don’t want to piss YouTube off, you probably should reconsider doing audio-only.
That being said, here’s a nice audio-only track for your audio-only ears to celebrate this new release;
(Rahshaan Roland Kirk -- Spirits Up Above)