Does it affect how you listen to / make music? What's your favorite track to experience and why?

I do! it used to play a bigger part in how I wrote, wanting to making shapes and colors interact better, but over time the reaction to sound has become less colors and more shape based so that's the bigger factor. And truth to be told this usually only affects sound design.

The bigger thing it can be helpful for is noticing when things don't "look" the same that should. Today I was mixing something and one of my vocal takes "looked" different than the others. Obviously it also literally sounded different, but sometimes I'll see discrepancies in an obvious way before I hear them in an obvious way.
Having this and also somewhat debilitating OCD (getting better though!) combine forces with whatever my artistic goals are make me do some really obnoxious shit while sequencing more intricate, glitchy breaks and the like... for better and for worse.

I can't say what my favorite thing to hear is, (though plucked sounding synths with delay and spaciously reverbed synth bells are usually quite pleasant) but a thing I hate extra because of synesthesia is sounds like squeaky car brakes. It's like this gigantic, sharp obelisk of brilliant light or a long, off-white, infinite line lookin piece of shit that I just have to deal with seeing while also being harmed by the sound.

I see some muted colors and fractal-like patterns that change with sound, but they're not consistent and don't really allow for things that BubblegumOctopus described. And they're only perceptible in darkness or with eyes closed, so they don't really affect any normal activities.

I did start a track 3 years ago (and one day at the time of writing lol) that was going to enhance this sort of stuff I get but it hasn't been touched since my move to Norway, which was some 2.5 years ago now... it is soon 3 years since I last touched that track. I should get into musicsounds again but so many other things are in the way simultaneously lol