Restored Classical and/or Koine Greek Pronunciation is used in all of these recordings, even those of nineteenth century Greek.
It would be a simple matter for a student to regularly listen to Greek videos on Youtube with Greek subtitles to also learn the Modern Greek pronunciation, which is similar enough for the switch to be made effortlessly; a serious student of Greek should be able to operate in both pronunciations.
For the relationship between Early Modern Greek and Ancient Greek, see The Modern Greek, its pronunciation and relations to Ancient Greek by T.T. Timayenis (1877) (Note: This text is slightly bombastic!)
The Modern Greek Language in its Relation to Ancient Greek by Geldart (1870) (Note: This text is academic.)
The course I have devised begins with:
1. LAAS D'AGUEN
( as a short road to Ancient Greek. The emphasis here is on building a practical vocabulary; the sentences are all short. There is no formal grammar; forms are taught implicitly.
Then the course continues with:
And after this, new vocabulary and simple forms are reinforced using:
3. ORBIS GRAECO-LATINUS
Then Kendrick's Attic Greek course, which includes formal grammar, is introduced:
Greek Ollendorff - Attic Greek Course, with similarities to Adler's Practical Grammar of the Latin Language. (Text)