Do-it-yourself DIY change new sail host, Diagnostics OBD2 U disk to listen to music

My new sail lift car a month, Diagnostics OBD2 to 1.2 manual ideal version of the most dissatisfaction is no CD and mp3 function, usually very to hear music, only the radio how can do, beginning with Gary's meizu mp3 plus one thread on receiving AUX mouth, I finally can listen to mp3, can find very troublesome, 1) mp3 to often charging, then use plug in the cigarette lighter charger through the usb port to mp3 power supply, but charge of time can't listening to music, there are annoying noise. 2) with mp3 music, in song trouble, from the radio next store content lattice mp3 player vomit them up, then key choose songs, trouble, at the same time when you are driving you must lower the head to see are not safe. 3) around the rejection is line, be in the way of, don't convenient. So I decided to change, first from online purchase the original car CD machine, the home be there or be square mp3 small  Diagnostics OBD2 sound down, with inside of small plate, here to explain the selected mp3 plate must not take the radio of that kind of, a sound quality is as special mp3 plate, and the second is to rise also trouble, a mode of option buttons. Don't bullshit, above!