It is not audible at all, neither normal nor slow, on my phone. I have this problem a lot; the pronunciation is simply unreliable. I don't remember the word — consonant-ερι-consonant was pronounced consonant-uh-consonant. Ψηλά was almost ψλα; there is sort of a vowel there, but it is impossible to tell what vowel it was supposed to be. Other times, extra vowels are added. The most obvious is με, which is consistently pronounced ούμε — not only an extra vowel, but with exaggerated stress. Don't even get me started on stress; much of the time, words are pronounced with so little stress that it is all but impossible to figure out where the tonos belongs, and some are flat-out wrong — από and εγώ are clearly pronounced άπο and έγω. I could go on and on. I realise this is something you probably can't fix, but almost every listening exercise becomes an exercise in frustration.