I have a sony xplod gt200 The truck is a 1999 Dodge Dakota R/T The deck beeps as I scroll through the menus and volume controls but will not play music in AUX, TUNER or CD. But I get Beeps. Thi sis very frustrating. I read something about this same problem with another deck on here but nobody responded. I hope someone can help me though.

check the FAQ for CDX-GT200 on sony site
http://www.sony.co.uk/support/en/product/faq/CDX-GT200 You need a XM/ Sirius receiver.

Also see operator manual from this site.
Support for CDX GT200

unit most likely has either malfunctioned or has dirty contacts take the face off and press the RESET button if this does not fix it take a QTip and some rubbing alcohal and clean the contacts on the face and unit this unit does come with a remote try using that

Press and hold the select button (volume). Press the select button repeatedly until "CLOCK ADJ" appears. Press DISPL button. Rotate the volume dial to set hour. Press the select button. Rotate the volume dial to set the minutes. Press the select button. Press DISPL button to change between clock and previous display. Page 4 in the owners manual.

https://servicesales.sel.sony.com/ecom/accessories/web/productSearch.do?searchOperation=modelSearch&searchText=CDXGT200#

Go to link below for manual on page 22 has wiring diagram.

http://akamaipix.crutchfield.com/Manuals/158/158GT200.PDF

You may have used the dimmer wire to ground your radio and blown your fuse. First unplug your radio. This problem can be checked with a multimeter by seeing if the wire is grounded with the car off. Turn on the lights and see if it reads 12 volts on that wire. If so, use another ground wire or attach it to the truck's chassis earth.

face is giving problem best solution change face

here is the manual

the GT-200 is the cheapest of the sony line. A new radio can be obtained for under $50. A faceplate direct from sony would be approximately the same amount. Check eBay or Craigslist for a used one.