A:AnswerThere is no USB port and no bluetooth connectivity on the Pioneer DEH-150MP, just an auxiliary input port for 3.5mm stereo mini-jack (like an MP3 player has for headphones). The WMA/MP3 lettering on the faceplate only refers to its ability to read and playback those formats off of a data CD.
A:AnswerThis unit will fit in your vehicle but you will need additional parts such as a dash kit, vehicle wiring harness and antenna adapter. You can contact your local Best Buy and they can get all the parts needed for your vehicle.
A:AnswerThis stereo will fit your 2004 Volkswagen beetle you just have to buy the right wiring harness that will fit your car and you van find the wiring harness at bestbuy or a Walmart or Autozone.