The latest version of WinJammer.  This release fixes some problems that
netters were reporting with 2.23.  Here's the author's description:

  WinJammer version 2.24.  The latest version of a full featured MIDI
  sequencer for Windows 3.1.  This release adds support for embedded system
  exclusive events, text events in tracks, multiple MIDI devices and improved
  usability.  Now supports the Gravis UltraSound card.
  
  WinJammer includes: 64 tracks per song, converts ROL files into MIDI, uses
  standard MIDI files, allows up to 16 MIDI devices to be used, full online
  help.  Includes a player program.