Sample Music

After the "sample music" folder is opened, a list of about a dozen songs are
listed. The tool bar above the list includes a command titled, "Play all".
I click on it and.....nothing happens.

Yet, if I select a single song and click a different command called, "Play"
which pops a menu to select Windows Media Player, that one song will play.

Even if I select all the songs, then click "Play all", nothing happens.