convert audio tide wav byte array java but temp file

given an inputstream called in contains audio information dense format (such mp3 ogg), i wish emanate byte array containing wav reworking quarrel data. unfortunately, try this, javasound hands following error:

java.io.ioexception: tide length specified

i managed work minute wav surrogate file, following reading behind in, shown below:

audioinputstream source = audiosystem.getaudioinputstream(new bufferedinputstream(in, 1024));
audioinputstream pcm = audiosystem.getaudioinputstream(audioformat.encoding.pcm_signed, source);
audioinputstream ulaw = audiosystem.getaudioinputstream(audioformat.encoding.ulaw, pcm);
file tempfile = file.createtempfile("wav", "tmp");
audiosystem.write(ulaw, audiofileformat.type.wave, tempfile);
// filetobytearray() slight reads file
// byte array; wanting brevity
byte[] bytes = filetobytearray(tempfile);
tempfile.delete();
return bytes;

this apparently reduction desirable. there improved way?