File
New Playlist
Creates a new empty playlist, it's like a folder for your songs that you'd like to have play in a particular order, or just for organization.
New Preset Playlist
Pro: New Singer
Close Window
Is supposed to do what you expect, but probably doesn't.
Save Database
Only for the paranoid: The database automatically saves itself every few seconds whenever there is pending data to be saved. If you really want to force it to save *right now* then use this command.
Add to Library…
Rip Selected
Export
See Export Lite and Export Pro
Get Info…
Show Original(s)
Will reveal in the finder the location(s) of the source files. Note this will reveal cached versions, and zipped versions of the song, it can reveal up to five sources per song: audio, video, cached audio, cached video, and zipped.
Pro: Venue
Pro: Catalog Setup…
Not yet implemented.
Pro: Print Catalog…
Not yet implemented, but see Printing.