How do I turn on Shuffle and Repeat in the iTunes® application?

Ear Training To Go mentions in the documentation turning on the shuffle feature and repeat feature of the iTunes application.

Turning the Shuffle feature on in the iTunes application.

Open the iTunes application.
Load the playlist that you will be listening to. (Tip: You must load the playlist before you set the shuffle or repeat features. These settings are specific per playlist and are retained even when you close and reopen the iTunes application.)
In the lower left corner of the iTunes window you will see a series of buttons.
The second button in the list is the shuffle button. Clicking this button will turn the shuffle feature On and Off. When the shuffle feature is on, the button will be highlighted.

Turning the Repeat feature on in the iTunes application.

Open the iTunes application.
Load the playlist that you will be listening to. (Tip: As before, you must load the playlist before you set the shuffle or repeat features. These settings are specific per playlist and are retained even when you close and reopen the iTunes application.)
The repeat feature cycles between off, repeat playlist and repeat song. When using the Ear Training To Go lessons, use the repeat playlist setting.

Note: You can have shuffle and repeat both turned on at the same time. This is how you may want to have the settings when going through the Ear Training To Go drills.