I'm used to the Winamp library, which automatically sorts and displays everything based their id3 tag, and if they don't have one, it does it based on file names. Because of this (and because my friend who sends me a lot of music uses iTunes), most of my filenames are just the title of the song and nothing else (not even the artist). But their id3 tag is correct. Is there a way to get foobar to display songs like that?

Playlist menu -> Sort...

That will allow you to sort an existing playlist. If you want to sort files that you add to a playlist (for instance, by drag-and-drop), you'd want to look in "Preferences->Core->Sort incoming files by..." (in 0.9, this is in "Preferences->Core". A basic string which sorts by artist, album, tracknumber and title would be:



(note this would have to be changed a little if you wanted to use it in 0.9)