Sound rate query

Hello friends,

I(shijesh) made debute to USRP & GNUradio a few days back.

To my earlier query with the subject SOUND CARD RATE (posted on 7th
sept), I tried what Eric had suggested me in his reply, but
unforunately that did’nt fix the problem. Now Iam getting the following
error.

#########################################################################################################################
root@BCGA68:/home/sabu#
GNUradio/gnuradio-3.0.4/gnuradio-examples/python/usrp/usrp_rx_nogui.py
-f 101.9M -m FM -O plughw:0,0
Usage: usrp_rx_nogui.py [options]
usrp_rx_nogui.py: error: no such option: -O
##########################################################################################################################

I have already been able to listen FM by using the follwing program
#####################################################################
usrp_wfm_rcv.py
#####################################################################

using the command
#####################################################################
root@BCGA68:/home/sabu#
GNUradio/gnuradio-3.0.4/gnuradio-examples/python/usrp/usrp_wfm_rcv.py
-f 101.9M -O plughw:0,0
########################################################################

ONE MORE QUERY that i want to clarify is whether i have to rebuild the
entire GNURADIO program after editing a python file 0R use the python
interpretor to get the executable file (ANYWAY I HAVE TRIED THE FORMER
BUT WAS IN VAIN)

I request kind co-operation from all of u friends, as a beginner to
the fascinating world of GNU’s .

Thanking u all , specially Eric

shijesh ak
india