questionsdo the supersonic 715 and 716 models actually…

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You see, the 'S' is for super and the 'U' is for unique
The 'P' is for perfection and you know that we are freaks
The 'E' is for exotic and the 'R' is for raps,
So tell those nosy people just to stay the hell back!

that said, yes, the 715 and 716 do play mp3 cd's:
http://www.supersonicinc.com/Portable_CD-MP3_players_with_Cassette/fuseaction/ViewProductDetails/productVia/2/ProductID/3,3877274
http://www.supersonicinc.com/Portable_CD-MP3_players_with_Cassette/fuseaction/ViewProductDetails/productVia/2/ProductID/3,3873902