changes to be deleted
merge try
PlayBar : buttons listeners implemented but song not playing yet
Merge http://github.com/LO23/BitMusic into IHM_update_abdoul
PlayBar : Playing function working [File Path: give the absolute one or FileNotFoundException will be triggered
PlayBar : palying is working, stopping is working, but NOT RESUMING
Merge pull request #247 from akdiallo/IHM_update_abdoul

[IHM] Linking PlayBar And ApiMusic