Yes I believe you are correct. I don't think I properly understood the creative commons license when I made this game, and I had thought that crediting freesound.org was enough. One of the challenges I've had with freesound.org over the years is that it's been really hard to find the same sound again to credit the authors, especially if all I have is the audio file. Can I ask how you managed to track them down?
Sure thing, there's a bunch of ways:
- Log into the account you downloaded with and go to https://freesound.org/home/attribution/
- Use the ID that by default is part of the filename and append that to freesound.org/s/[sound_id]
- Use the username and sound name that are part of the default file name on google
But sometimes sounds get deleted, then it doesn't work.
If you renamed the sounds, you might be out of luck, unless the uploader added some kind of metadata.
To get the files I used Asset Ripper.