I am looking for iS40 style editor or MIDI file to iS40 style converter if anything like that exists, since even though there are good styles built in, there are always some styles missing.
It already allows you to edit/modify a limited i3 style via midi files (read docs, style guidelines). you find i3/is40 converter "istyle" at ftp://ftp.mindspring.com/users/agmorr/software
currently shareware demo is for DOS in jan 98 available for Win95.