I was thinking it would be very helpful to be able to group or tag downloaded sounds with a project label. So for instance, I've downloaded several sounds, but didn't end up using some, but others I did. I would be nice if I could add a "Used in project: Film XYZ" or something (maybe multiple projects would be good).
And then be able to have a url directly to that project attribution like: www.freesound.org/accountname/attribution/project - or something similar.
Rad FX Studios
You can 'bookmark' every sound.
1] Go to a sound
2] at the right there is a bookmark-button. You can make your own bookmarks there.
hope it helps you??