This module is about as no-frills as they come. Just a play, pause, and restart buttons. Auto starts with page load. The backend is in German, so you may need to google a translation.
The module config allows a change of mp3 title, but not a choice of file names. You either rename your file to the default, or hack the modules PHP to include use your filename. An easy hack, but I don't quite understand why this was not added to the back-end. The default filename is lied1.mp3 which in German is "song1.mp3", but "lied" has the unfortunate English meaning of being untruthful. For my intended use, this would not be ideal should the filename get sniffed out by the end user.
Otherwise, the module works as intended and was a perfect fit to my no-frills requirements for this site.
Had the filename been accessible in the back-end, I would have rated this 5 stars.