modified config() methods in Core (Playlist, PlaylistElement, FadeInfo,
and AudioClip) to read ID as hexadecimal string & not decimal number
some config xml files and tests had to be modified accordingly
modified config() methods in Core (Playlist, PlaylistElement, FadeInfo,
and AudioClip) to read ID as hexadecimal string & not decimal number
some config xml files and tests had to be modified accordingly