One more thought...

A third step or level has just been suggested to me concerning the place of entertainment. This kind of builds on the appropriate response to any form of entertainment that promotes wickedness.  When we encounter that rare instance of entertainment that promotes evil (that was sarcasm), our response should be to flee from it.  In very much the same way that we respond to a sinful thought or temptation, we ought to respond to evil entertainment. When an evil thought comes to mind, we should not think on it or dwell on it. We must reject it outright or it will take hold of us, making the later rejection that much more difficult.
Now in terms of entertainment, it becomes a little more tricky.  Because there is no such thing as evil music or evil painting or evil statues, that which is evil, that is, the content, must be separated from the medium in which it dwells. 
Movies, for example, are not in themselves evil.  What can be evil is the message that is being communicated.  What is evil is when a sin is promoted or shown to be good.  But even in that instance, if someone recognizes this error, but finds value in the overall movie, is it wrong to enjoy the film?
Again, we have to question what it is that we are enjoying. 
A further question can be asked about entertainment.  Is it worth the time?  But I'll leave that for another time?