Vicentino without microtones

I just got the Pitch CD 'Classic' from AFMM that I'd ordered. On it is the world premiere recording of the famous microtonal composition 'Musica prisca caput' that I'd eagerly been waiting to hear. To my great disappointment, the piece is sung without the microtones! In his notation, Vicentino uses a dot to indicate a pitch that is a diesis (ca. 1/5 tone) sharp. The singers on the recording ignore the dots. Vicentino's microtonal inflections may in fact be optional but I think it is highly misleading that the American Festival of Microtonal Music puts out a recording of a historical work famous for its use of 'enharmonic' intervals - without them.
In addition, the first ten bars are left out in the recording.
There may be explanations to these issues on the liner notes which according to the CD cover should be on the afmm web pages - but I couldn't find them.

Could Johnny Reinhardt share some light on this?

Juhani N.