Does it apply to audio as well? If you think of a song you know well, do you feel like you "hear" the music in your head, as though playing back an audio file?

If you think of a movie scene you've seen, what is that like? Can you recount what was in it, even if you can't "picture" it? Or does this also prevent you from recalling the details of the scene?

People's ability to "hear" music ranges from nothing at all to being able to "play back" close to what they heard. For my part, I have aphantasia, I can't hear the sound I heard, but I can "play it back" in my own voice (which is distinctly less pleasing).

As for movie scenes, I rarely tend to remember specific scenes - I tend to remember concepts and dialogue - but when I do remember a scene, I can often describe it in detail, and I can sketch out scenes, be it from movies or real life, that I remember well with a lot of spatial detail.

I suspect I probably do remember less of visuals than people without aphantasia because I don't really get much value from it, but I definitely can.

Not the person you asked, but a fellow Aphantast: I cannot imagine visually at all. End-of-Yoga-class imaginary journeys are completely useless for me. I'm also faceblind. But I can imagine music I'm familiar with without any problem, and have a inner monologue (it blew my mind when I learned that some people do not). Also I have visual dreams, but nowhere near to the level of details that I have heard other people describe.

I image a movie scene: There is a man sitting at a table in a cantina. He has dark hair, slightly rugged clothes. Standing next to his table is a little green alien that targets a blaster at him. The person is sitting low, at an angle that prevents the alien from seeing that he has drawn his own blaster below the table. I know all of this, but I have no visual image of it. If I had to draw what I see in my head it would be a blank piece of paper with arrows pointing at certain points, labeled with "Han", "Table" and "Greebo".

As someone who is close to the aphantasic end of the spectrum: for me, it does not apply to audio. That difference is how I came to understand aphantasia better: I can very concretely hear sounds and music in my "mind's ear" in a way that I can't for vision.

I'm a musician, but don't "hear" music in my head. I have an extensive memory of lyrics, and can guess the next notes of a song, but I use my inner monologue to sing or hum it in my head, I don't hear it. I can recall the visuals of a movie scene similar to how I can tell you how my office is organized. It is a spatial memory of where things are and aligned with each other. I don't replay the scene in any sense of the word

Aphantasic here - I constantly have music playing in my head to the point of it being slightly annoying. If I really concentrate, I can separate out the parts like stem separation, but generally it's a fairly high fidelity recreation of the most prominent parts. There was a brilliant thread on Mastodon a couple of years ago where people (mostly musicians) were describing their inner-music abilities - mine turned out to be very ordinary. The only time mine ever approach what many of the others described is when I'm very slightly stoned - then my brain starts to compose original music at extremely high fidelity in basically any genre. I just wish I could get it out of there.