You can download accompaniment for Flutoškola 1 and 2 in midi format.
The files are marked with "str63_cv16.mid", which means
page 63 and exercise 16.
A file marked "FL2_str44_cv6.mid" means Flautoškola No. 2
page 44 and exercise 6.
Accompaniments to this school are published with the consent of the author.