Recent Documents

Hey everyone,

For certain types of files (mp3, wav, etc), opening them through Windows
Explorer (simply by double-clicking on them) doesn't register them in the
list of recent documents. I've read about edit flags with which you can
prevent specific extensions from showing up in the list, but the concerned
extensions don't have any. So that's not the problem.

Any idea how I could force them to appear in the list when I open them? I
use foobar2000 to open them, but I'm not sure that has anything to do with it.