Changes since v2.11:

The following tooltypes have been removed: SPEAK, NOMON, PLSIZE

Upd  support  has  been dropped.  If you want to hear filenames spoken, use
script defined by FILENAMEREXX.  If you want to hear a signal that there is
a message on the screen, use script defined by MESSAGEREXX.

Illegal  selection  from  the playlist when SELECT requester is used, won't
give any signal.  To fix this:  If you have OS 3.0, use sound prefs to have
an  audible  beep  when  screen  flashes.  Otherwise use 'beep' utility, it
should be available on AMINET (it is on AMINET CD 2).

NEW FEATURES IN 2.20:

o ARexx support: MidiPlay recognizes over 60 different ARexx commands

o Playlist window for editing the playlist and selecting from it

o Listview for text events

o lyric window with scrolling lyric

o PATCHCHANNEL feature lets you map events on one channel to another

o VOLUMECHANGE feature lets you increase/decrease volume on any channel

o keyboard shortcuts for volumechange

o with MESSAGEREXX, FILENAMEREXX and FILETYPEREXX parameters you can
  e.g. hear messages and filenames via say command, view text files
  associated with MIDI files or decompress archives and play MIDI files
  in them

o graphical gadgets for play, stop, cont, prev, next and fast forward

o FADE=time defines now the fade out time

o other new tooltypes: LYRICTYPE, PLAY, DIRBUFFER, FORCERESET