Classes
 ClassDescription
 ASX The ASX class parses ASX formatted playlist files and adds the data to itself.
 ATOM The ATOM class parses ATOM formatted playlist files and adds the data to itself.
 B4S The B4S class parses B4S formatted playlist files and adds the data to itself.
 M3U The M3U class parses M3U formatted playlist files and adds the data to itself.
 PLS The PLS class parses PLS formatted playlist files and adds the data to itself.
 XSPF The XSPF class parses XSPF formatted playlist files and adds the data to itself.