const char * const AUXILIARY_IMAGE_ALPHA_NAME("auxiliaryImageAlpha");
const char * const PLAY_RANGE_NAME( "playRange" );
const char * const PLAY_STATE_NAME( "playState" );
const char * const AUXILIARY_IMAGE_ALPHA_NAME("auxiliaryImageAlpha");
const char * const PLAY_RANGE_NAME( "playRange" );
const char * const PLAY_STATE_NAME( "playState" );