是，支持flac音频格式。请参见doc block for the function wp_get_mime_types() （和other mentions).
/**
* Retrieve list of mime types and file extensions.
*
* @since 3.5.0
* @since 4.2.0 Support was added for GIMP (.xcf) files.
* @since 4.9.2 Support was added for Flac (.flac) files.
* @since 4.9.6 Support was added for AAC (.aac) files.
*
* @return string[] Array of mime types keyed by the file extension regex corresponding to those types.
*/
function wp_get_mime_types() {
访问者的浏览器是否支持它是一个完全不同的问题，不在WordPress手中。
