Audio file and j2me

While i am sending an wav file from a mobile client(wireless tool kit) to a server UTFdataformatexception is occuring. I am using socket connection , input/output stream and writeUTF method to send it. This is happening only in cases of wav files. Can anybody help?i need help very badly in this...

how can i overcome this..?

[338 byte] By [anirban_5683a] at [2007-11-27 6:55:45]