This is the 11569th most frequent Polish word.
kasetowej
"Kasetowej" means "cassette" (adjective, related to cassettes).
Here, 'kasetowej' is an adjective describing the noun 'taśmy' (tape), indicating that the tape is in the format of a cassette.
Słuchałem muzyki z kasetowej taśmy.
I listened to music from a cassette tape.
'Kasetowej' in this sentence modifies 'płycie' (disc), highlighting a specific attribute of the disc being shaped or stylized like a cassette.
Znalazłem stare nagranie na kasetowej płycie.
I found an old recording on a cassette-shaped disc.
Here, 'kasetowej' describes 'epoki' (era), referencing the time period associated with cassette usage.