yes, some of those on the pic can skip tracks, change sides, one has option to slow down and speed up as wellAwesome collection, although I was a bit later to personal music players and skipped cassette.
I had numerous cd players, and jumped onto mp3 cd players, including a Freecom 8cm mini cd model.
Of course flash memory quickly came down in price and I moved to flash MP3 players.
Am i right in thinking that some models of Walkman could play both sides of the tape, and could automatically skip tracks?