ITunes For Mac :: Play Single Or Small Set Of MP3 / Other Audio Files And Then Stop

I download an mp3 file.  One of them is for a class I'm taking that has audio files as part of the course.  If I double click in Finder on the file, it begins playing in iTunes and when done, iTunes goes on to play something else.  While online is a live class, I did this and iTunes picked up a recording of a discussion I had recorded and played it aloud with my live mic to the entire class.

There are a number of things I hate about iTunes, this is but one.  In general I use it without trouble.  However, if I construct a playlist, when that list is exhausted it in some fashion known only to iitself and the developers chooses somewhere else to continue.  It tends to think of itself as a super large iPod and keeps playing until I manually stop it.  Since I have many days of audio in the library, this is not particularly sensible. What is the best way to play a single or small set of mp3 or other audio files and then stop?   iMac with Mavericks 10.9.3