in media player click on help. type in 'repeat'. its there.
I copied it easy enough to post.
Shuffle and repeat items in Windows Media Player
In Windows Media Player, items that you play appear in the list pane in Now Playing mode and in the Player Library. You can change the order in which the items play by turning on shuffle, which will make items play in a random order. You can also choose to play the items repeatedly. When you turn on repeat, all items in the list pane will play once and then begin playing again. You can also turn on both shuffle and repeat at the same time. It's not possible to shuffle or repeat DVDs.
Turning on shuffle or repeat doesn't change the display order in the list pane. To play only one file repeatedly, clear the list pane of all items except the one you want to play.
In Now Playing mode, right-click an open space in the Player, and then click Show list to view the list pane. In the Player Library, click the Play tab to view the list pane.
Picture of a Play button Go to the Windows website to watch the video. (0:53)
To turn on shuffle or repeat, do one or both of the following:
To shuffle items, click the Turn shuffle on button Picture of the Turn shuffle on button.
To repeat items, click the Turn repeat on button Picture of the Turn repeat on button.
Shuffle and repeat will remain on until you click the buttons again to turn them off.
