I have included Fronimo and TAB formats so that you can make your own modifications, formatting changes, performance notes, etc. I would like to include StringWalker or Django format from Alain Veylit, but time does not permit, at present. In any case, for now, those using StringWalker or Django can read in the TAB or midi versions I have provided. I have also found MidiNotate Composer very useful in viewing, manipulating, and playing midi files (You can get a free version of the MidiNotate Player here, for playing midi files.). For instance, if you obtain a four-part madrigal, say, in the form of a midi file, you can edit it in MidiNotate and save the bottom three parts as a midi file, transpose it into any key that you like, then use Django, StringWalker, or Fronimo 3 to read it into tab format. I decided to hang onto the TAB format, since it occupies little space, and I occasionally have a use for it.
Since Fronimo 3 is much superior to Fronimo 2, I am using Fronimo 3 for my editing jobs from now on. Unfortunately, Fronimo 3 does not export files in Fronimo 2 format, so if you only have Fronimo 2, you will have to read in the tab or midi format, and if there are mensural notation staffs, you will have to enter these manually or via the midi file. Francesco Tribioli has created a new version of Fronimo 3 that is a free upgrade for those who have Fronimo 3. Old Fronimo 3 files (as well as TAB, Fronimo 1, Fronimo 2 files, and midi files as in the old release) are supported in the new release. So from close to the time of that release, additions to the website will be in the new format. Meanwhile, some people have had trouble reading the existing .ft3 files. Make sure you have the latest version of Fronimo 3 to read these (currently build 12, rev 84). Otherwise, of course, you can always use the PDF files