// "title" String title of this file
// "copyright" String copyright message
// "date" Date date of the recording or release
// "comment" String an arbitrary text
for (Entry<String, Object> entry : format.properties().entrySet()) {
metadata.set(entry.getKey(), entry.getValue().toString());
}
} catch (UnsupportedAudioFileException e) {
// There is no way to know whether this exception was
// caused by the document being corrupted or by the format