Both A Timely Matter and Mr. Markov I Presume are m4a files, but I'm getting reports it doesn't play on certain devices (seemingly Apple specifically) whereas I can play them well enough. Though if I scrub the timeline it doesn't jump and instead keeps playing causing the bar to overflow.
There're also songs I can't play in my browser that are m4a, mostly all of these and all of these (though they work fine if I download them, so it's maybe a browser thing).
This has never happened before with mp3, so something screwy is going on here.