Yes, it is plastic. But I love mine. It actually plays songs, and the records and the book they come in are so cool looking. I bought mine on sale and don't regret it. Rebecca's record player is made the same as Julie's; there are little indentations on the underside of each record that correspond with indentations on the base of the record player so the player knows what record has been placed on it and plays that song. You can even get the various songs to play without the records by knowing which of the little buttons to push. It is the plastic base that has the part that plays the music in it.
For those that complain about it being plastic, even Molly's radio was plastic, and that was a PC item. I think they make them out of plastic so that they will hold up longer.