You can play them on any LP turntable (is that one word or 2??).
As I recall...you needed to insert a plastic ring in the center of
the 45 so that it would fit correctly on the post of the turntable.

Then, all you had to do is flip the switch from LP (or whatever it
said...) setting to the 45 setting....in order to hear the music
the way it was supposed to be heard, required the turntable to spin
slower....in this case 45 revolutions per minute....

Katie