judging means for judging whether {HEAD ~ the external device} is able to receive {TAIL ~ the data} to be reproduced; and 
is able to receive
judging means for judging whether { HEAD ~ the external device } is able to receive { TAIL ~ the data } to be reproduced ; and
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH