Force refresh GUI after load song i.e. revert previous behaviour. Fix for #170.
revert changes made by commit 802207b, some codding style improvements
Refactoring of audioEngine_process_checkBPMChanged
Refactoring of audioEngine_process_checkBPMChanged - avoid division by 0
Merge pull request #179 from xjjx/master

Force refresh GUI after load song. Fix #170