First, I installed Strawberry 1.2.19 from Flatpak via the built-in "Software" app. The UI was messed up and upon connecting the iPod, Strawberry complained "This is an iPod, but you compiled Strawberry without libgpod support. If you continue, this device will work slowly and songs copied to it may not work."

OK, so I removed the Flatpak version again and tried the download from https://files.strawberrymusicplayer.org/strawberry_1.2.19-bookworm_amd64.deb It seems to run fine, the iPod shows up under Devices with "Double click to open" and I can play the music on it. But how do I sync it or copy new music to the iPod?

I tried to find any documentation regarding iPods, but other than the thin Wiki, there doesn't seem to be any. I can't find a sync button or menu and dragging files from my playlist onto the iPod panel changes the (+) icon on the mouse pointer to a (x) and I can't drop anything there.

What can I do?