[villain]

Came back to update - this was resolved, but I'm not 100% sure how. I had plugged my SD card into my computer via reader to try other things, got sidetracked and ended up not touching it. Plugged it back into the Tangara the next day and it worked as normal. I had already tried ejecting the SD card and plugging it back in before this and it had made no difference, so I'm not sure what changed in between!

Can you play these tracks from the file browser, or does it not work there either? Just to narrow down whether the issue is with playback itself or the database not being able to find the file it's pointed to.

I did try this before it fixed itself and indeed could not play things via the file browser.

Have you tried deleting the database off the card and then doing a hard reset?

Luckily this wasn't necessary as my database is pretty massive and would have taken ages to re-add - but hello, funny seeing you here! I remember you from tokutwt (i was kaixanized over there)