content: I picked this little gadget up because it claimed it was a univeral music adapter.Well, it didn't work with my Intel MP3 unit (which incidentally did work with an older music adapter I had. It did work with my old disc man and did work with an iRock MP3 player.If it works, it's great, if not well, it's garbage.The 1 star is for lack of support or listing of compatible players.Also, if you live in an are where high and low frequencies on the FM band are used by existing radio stations, then this won't work well because it will interfere with the local broadcase. I found it to work poorly in both NYC and DC.