diff --git a/src/Network/fgcom.cxx b/src/Network/fgcom.cxx
index 054e740..5ed1d2e 100644
--- a/src/Network/fgcom.cxx
+++ b/src/Network/fgcom.cxx
@@ -652,8 +652,10 @@ void FGCom::valueChanged(SGPropertyNode *prop)
           
           std::string urlcmd = "ffplay -nodisp -autoexit -loglevel quiet -i ";
 
+          urlcmd.append(soundpath.c_str());
+
           SG_LOG(SG_SOUND, SG_INFO, "CMD :" << urlcmd );
-          system(urlcmd.c_str(),soundpath.c_str());
+          system(urlcmd.c_str());