My cd/radio all the sudden stopped working maybe fuse??

Check fuses in your car. You can find description of your fuses below. Ford Mustang Fuse box Years of production 2005 2006 2007 2008 2009 2010...

There are two fuse boxes. One is located on the kick panel in front of the passenger side seat. Remove the big cover. Inside there is a second cover that ultimately gets you to the fuses. Try #20 (reference the template on the inside of the cover). There is a second fuse box (high current fuses) inside the engine compartment (on the passenger side of the compartment, big square plastic box). Fuse # 56 (reference the template inside the cover of the fuse box). Same deal.

By the way, there is a fuse removal tool inside the interior fuse box (white plastic piece on the left side of the box). You will need that removal tool to work on the ones in the engine compartment. That other box doesn't have a tool.
Hope this helps.