[App_rpt-users] Control Playback

Anyone know how to make this work? I have it playing the file fine, the two issues I have 1.) seems to loop 2.) unable to control it even using *41234 first - http://www.voip-info.org/wiki/view/Asterisk+cmd+ControlPlayback tried with | and , neither works - with the option 4000|4|6|0|1)... extensions.conf exten => 1234,1,ControlPlayback(/etc/asterisk/scripts/ARNL/nslnp,4000,4,6,0,1) exten=1234,1,Answer exten=1234,n,Playback,rpt/node exten=1234,n,Rpt,1234|Pv Am I missing something or is this just not practical with app_rpt? seems this along with AGI options in asterisk could make for some interesting features.