any one help me how to write audio file in 2009???

am using... this command a=audiorecorder(8000,8,1); record(a,5); play(a); wavwrite(8,'a.wav');...

here my prob starts.. when i run first two lines in command window it works.. but when i completely run it shows error .. cant write file while recording process.. but i want to the same to make matlab R2009b.. any one.. give a slight modification....thanks

[Steven Lord]

Show the EXACT and FULL text of the error message, not a paraphrased version of that message.

[Dhines]

sir my program..

       a=audiorecorder(8000,8,1);
       record(a,5);
       b=getaudiodata(a);
       plot(b);
       play(a);
       wavwrite(8,8000,'a.wav');

cannot retrieve audio data while recording is in progress.