Toolbar (Live Graph):

Browse delay - when in browsing mode, the delay between playing tracks. If set to 0, there is no delay and the full track is played.

Volume -sets the iTunes volume level.

Artwork size - specifies the album arttwork size used, if any exists. 0 denotes no artwork and display text only.

Zoom - zoom factor. 1.0X = normal.
Auto Switch - automatically switch to iTunes when playing a track.