analoginput not working on 64 bit

I am using MATLAB 2012b. I used the analoginput command and MATLAB asks me to follow certain documentation. The code I tried to run was:

a=analoginput('winsound');
addchannel(a,1);
a.SampleRate=8000;
a.SamplesperTrigger=40000;
a.TriggerType='immediate';
start(a)
[d,t]=getdata(a);
plot(t,d)
zoom on

The error I got

Error using analoginput (line 46)
To learn about using data acquisition devices on the win64 platform, see
the documentation on the session-based interface.

I am a newbie so can someone post the code for getting the thing work on 64bit version