When I try to add labels at the playback position with Command + ., they always get added at the same place. It doesn’t seem to matter where the playback cursor is. I’m using Audacity 2.02, release build, dated 21 aug 2012, and Mac OSX 10.8.2.
Ah sorry, for some reason, I was hitting “Ctrl + .” instead of Command. I’ve been switching between Mac and Windows a lot lately … blame that Oddly, hitting “Ctrl + .” does add a label at the cursor position (not the playback position, if that makes sense), and names it “.” . Anyway, Command + . works as expected.