void change_compatibility_selection (bool select, WeakCompatPtr const & compat);
void change_quality_selection (bool select, WeakQualityPtr const & quality);
void change_format_selection (bool select, WeakFormatPtr const & format);
void change_sample_rate_selection (bool select, WeakSampleRatePtr const & rate);
void change_compatibility_selection (bool select, WeakCompatPtr const & compat);
void change_quality_selection (bool select, WeakQualityPtr const & quality);
void change_format_selection (bool select, WeakFormatPtr const & format);
void change_sample_rate_selection (bool select, WeakSampleRatePtr const & rate);