Apple updates iTunes enough, it's often difficult to find where they've hidden something under their new "improvements". I read about 20 suggestions on how to get the "repeat" to stop, but people used vague references like "turn off the repeat option"...not much help if you have no idea where the repeat option is and your iTunes is setup where it doesn't display the "repeat" option.
Soooo, taken step by step:
1) Open iTunes.
2) Click on "Library" or "Playlist" at top of the screen.
3) Choose a song to play.
4) When the song starts playing, you may see the cover art or the list of songs in the album for that song.
4) At the bottom of the screen (above "My Music, For You, New, Radio, and @Connect) there is a "pause button" on the left and the name of the current song being played.
5) Swipe UP on that info bar and it will display a larger image of the Album Art, Title, and the "Rewind, Pause, FF" buttons.
6) Along the bottom of the individual song/album art are the Repeat and Don't Repeat Button options in the middle of that bar. Two bars with arrows that crisscross each other is the REPEAT Option and Two lines running side by side with the arrows pointing in opposite directions is the play the song end to end w/o repeats. Whatever you choose is applied to the entire library.
IF you don't know there are SWIPE UPS it's hard to find the right screen to make the changes. Apparently it's a rarely used options since Apple has moved it off the front page it used to be on and put it in an obscure location that's difficult to find.
To get out of the individual song view, there is small down arrow in the top left corner of the screen to get you back to "My Music".
EZ right. haha