for testing purposes only:

added void osSetParcelMediaTime(double time) command to script engines. 
which sets the position of the media that is playing. Time is in seconds.
Doesn't do any security checking (should be checking that the object/script is owned by the parcel owner). So could be abused, if it is then we should remove it, or add the security.
Only tested in dotnet scripting engine, but should work in XEngine too.

OpenSim/Region/Environment/Scenes/Scene.cs

@@ -757,8 +757,11 @@ namespace OpenSim.Region.Environment.Scenes
                         UpdateEvents();
 
                     if (m_frame % m_update_backup == 0)
+                    {
                         UpdateStorageBackup();
                         
+                    }
+
                     if (m_frame % m_update_terrain == 0)
                         UpdateTerrain();
 
@@ -3662,6 +3665,19 @@ namespace OpenSim.Region.Environment.Scenes
         #endregion
 
 
+
+        public void ParcelMediaSetTime(float time)
+        {
+            //should be doing this by parcel, but as its only for testing
+            ForEachClient(delegate(IClientAPI client)
+            {
+                client.SendParcelMediaCommand((uint)(2), ParcelMediaCommandEnum.Pause, 0);
+                Thread.Sleep(10);
+                client.SendParcelMediaCommand((uint)(64), ParcelMediaCommandEnum.Time, time);
+                Thread.Sleep(200);
+                client.SendParcelMediaCommand((uint)(4), ParcelMediaCommandEnum.Play, 0);
+            });
+        }
     }
 }
         

OpenSim/Region/ScriptEngine/Common/BuiltIn_Commands_BaseClass.cs

@@ -2034,6 +2034,13 @@ namespace OpenSim.Region.ScriptEngine.Common
             return m_LSL_Functions.llList2Float(src, index);
         }
 
+
+        //for testing purposes only
+        public void osSetParcelMediaTime(double time)
+        {
+            m_LSL_Functions.osSetParcelMediaTime(time);
+        }
+
         // LSL CONSTANTS
         public const int TRUE = 1;
         public const int FALSE = 0;

OpenSim/Region/ScriptEngine/Common/OSSL_BuilIn_Commands.cs

@@ -569,5 +569,11 @@ namespace OpenSim.Region.ScriptEngine.Common
                 return String.Empty;
             } 
         }
+
+        //for testing purposes only
+        public void osSetParcelMediaTime(double time)
+        {
+            World.ParcelMediaSetTime((float)time);
+        }
     }
 }

OpenSim/Region/ScriptEngine/Common/OSSL_BuilIn_Commands_Interface.cs

@@ -65,6 +65,7 @@ namespace OpenSim.Region.ScriptEngine.Common
         void osOpenRemoteDataChannel(string channel);
 
         string osGetScriptEngineName();
+        void osSetParcelMediaTime(double time);
 
     }
 }

OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs

@@ -581,5 +581,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 return String.Empty;
             }
         }
+
+
+        //for testing purposes only
+        public void osSetParcelMediaTime(double time)
+        {
+            World.ParcelMediaSetTime((float)time);
+        }
     }
 }

OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs

@@ -66,5 +66,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
         void osSetRegionWaterHeight(double height);
 
         string osGetScriptEngineName();
+        void osSetParcelMediaTime(double time);
     }
 }

OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs

@@ -200,5 +200,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         {
             return m_OSSL_Functions.osGetScriptEngineName();
         }
+
+
+        //for testing purposes only
+        public void osSetParcelMediaTime(double time)
+        {
+            m_OSSL_Functions.osSetParcelMediaTime(time);
+        }
     }
 }