That would mean that you could choose your radio station (or Spotify playlist) by picking out the appropriate floppy disk and shoving it into the radio.
It just feels better than tapping on a button on a touchscreen...
My living room RPi based music solution is an old Grundig radio from the 50s, modified so I can control the volume using the actual volume control. Playback sources (currently online radio stations chosen by genre) can be switched using the physical buttons. The "off" button shuts down the Pi.
Maybe I'll do a writeup on my blog sometime, in case people would be interested...
Could also do it with barcodes
i did this with toggle switches in my car, and they're binary, so the 4 gave me 16 options... per mode, i had a mode button too, in radio mode it was either podcasts, a few SDR options, and a few mp3 music genres
then i decided the toggle switches were gonna get embedded in my face if i got in a wreck so i took them out ... there's a reason all the buttons in cars are round and plastic, I guess.
It would amuse my friends on car trips, not that I have any of those...
However, nobody still makes SD cards this small, and using a 16 GiB card for 1 album seems wasteful :)
But floppy disks would be much nicer.
I had a similar idea but i wanted to embed small nfc tag into some floppy disk and use a broken floppy reader that i own with a tag reader inside the gut of the reader reusing only the eject mechanism and the led, (i will be missing the nice motor noise tough...).
I'm also experimenting with other cartridge-style meccanism
https://en.wikipedia.org/wiki/FlashPath
It is an adapter that takes flash cards (e.g. SmartMedia) and can be used in 3.5" drives.
[1] https://www.raspberrypi.org/blog/who-needs-vinyl-records-whe...