A radio is symbolic of spiritual communication. We should be alert and aware of all the subtler vibrations at this time and be open to any eventuality. Often in dreams a radio can stand for the voice of authority, or of commonly held ideas and ideals. As a method of communication, a radiosuggests information that is available to everyone and therefore is widely understood. To dream of hearing a radio playing suggests a form of connection with the outside world. What we are hearing is also important: speech would suggest the transmission of information whereas music would indicate a more subtle vibration. You might also like to consult the entries for Communication and Media.