You could have downloaded SplitTunes 1.1 for Mac from our application library for free. This free Mac app was originally developed by Ashenyx. The application lies within Audio & Video Tools, more precisely Music Production.
From the developer:
SplitTunes is an innovation in earphone usage! Have you ever shared earphones or earbuds with your friend and ended up arguing over what song to play? Well, earphones have 2 sides for a human's ears, but it would play one song for both sides. If you were to share it, unless the person who you are sharing with shares the same musical taste, both of you would probably end up having a hard time picking a song to satisfy both of you.