No Sound for separate audio file Blender Video Editor New installation of Blender 2.78a
Windows 10

I have added a video file to the Video Sequence Editor and the sound plays without issue.

I have added a wav file but no sound is produced.  Then I tried an mp3 file and again no sound is produced.  

No the audio is not set to muted.

Any ideas?
m.ardito hinted that the audio files might be corrupted, and apparently they were. Don't know how on a simple copy paste but it happened. So deleting the audio files and replacing them solved the issue.