Added overloads:

GenSource( out uint )
GenBuffer( out uint )
DeleteSource and DeleteBuffer changed to use 'ref' keyword to be consistent with Gen functions.
GenEffect( out uint )
DeleteEffect( ref uint )
GenFilter( out uint )
DeleteFilter( ref uint )
GenAuxiliaryEffectSlot( out uint );
DeleteAuxiliaryEffectSlot( ref uint ) (changed from previously passing by value, and removed the 's' in name )
renamed "DeleteAuxiliaryEffectSlots( int slot )" to "DeleteAuxiliaryEffectSlot( int slot )"
renamed "int GenAuxiliaryEffectSlots()" to "int GenAuxiliaryEffectSlot()"
New:
ALSourceType GetSourceType( uint sid )
ALSourceState GetSourceState( uint sid )
ALDistanceModel GetDistanceModel( )

Source/OpenTK/Audio/OpenAL/AL/AL.cs

@@ -16,7 +16,7 @@ using OpenTK.Math;
 /* Type Mapping
 // 8-bit boolean 
 typedef char ALboolean;
- * byte
+ * bool
 // character 
 typedef char ALchar;
  * byte
@@ -26,7 +26,7 @@ typedef char ALbyte;
 
 // unsigned 8-bit integer 
 typedef unsigned char ALubyte;
- * ubyte
+ * byte
 
 // signed 16-bit 2's complement integer 
 typedef short ALshort;
@@ -67,6 +67,7 @@ namespace OpenTK.Audio
 {
     public static partial class AL
     {
+
         #region Constants
 
         public const string Lib = "openal32.dll";
@@ -441,6 +442,14 @@ namespace OpenTK.Audio
             return (int)temp;
         }
 
+        /// <summary>This function generates one source only. References to sources are uint values, which are used wherever a source reference is needed (in calls such as AL.DeleteSources and AL.Source with parameter ALSourcei).</summary>
+        /// <param name="source">Pointer to an uint value which will store the name of the new source.</param>
+        [CLSCompliant( false )]
+        public static void GenSource( out uint source )
+        {
+            GenSources( 1, out source );
+        }
+
         #endregion GenSources()
 
         #region DeleteSources()
@@ -490,7 +499,7 @@ namespace OpenTK.Audio
         /// <summary>This function deletes one source only.</summary>
         /// <param name="source">Pointer to a source name identifying the source to be deleted.</param>
         [CLSCompliant(false)]
-        public static void DeleteSource(uint source)
+        public static void DeleteSource( ref uint source)
         {
             DeleteSources(1, ref source);
         }
@@ -1305,6 +1314,14 @@ namespace OpenTK.Audio
             return (int)temp;
         }
 
+        /// <summary>This function generates one buffer only, which contain audio data (see AL.BufferData). References to buffers are uint values, which are used wherever a buffer reference is needed (in calls such as AL.DeleteBuffers, AL.Source with parameter ALSourcei, AL.SourceQueueBuffers, and AL.SourceUnqueueBuffers).</summary>
+        /// <param name="buffers">Pointer to an uint value which will store the names of the new buffer.</param>
+        [CLSCompliant( false )]
+        public static void GenBuffer( out uint buffer )
+        {
+            GenBuffers( 1, out buffer );
+        }
+
         #endregion GenBuffers
 
         #region DeleteBuffers
@@ -1355,7 +1372,7 @@ namespace OpenTK.Audio
         /// <summary>This function deletes one buffer only, freeing the resources used by the buffer. Buffers which are attached to a source can not be deleted. See AL.Source (ALSourcei) and AL.SourceUnqueueBuffers for information on how to detach a buffer from a source.</summary>
         /// <param name="buffer">Pointer to a buffer name identifying the buffer to be deleted.</param>
         [CLSCompliant(false)]
-        public static void DeleteBuffer(uint buffer)
+        public static void DeleteBuffer( ref uint buffer)
         {
             DeleteBuffers(1, ref buffer);
         }
@@ -1363,7 +1380,7 @@ namespace OpenTK.Audio
         /// <summary>This function deletes one buffer only, freeing the resources used by the buffer. Buffers which are attached to a source can not be deleted. See AL.Source (ALSourcei) and AL.SourceUnqueueBuffers for information on how to detach a buffer from a source.</summary>
         /// <param name="buffer">Pointer to a buffer name identifying the buffer to be deleted.</param>
         [CLSCompliant(true)]
-        public static void DeleteBuffer(int buffer)
+        public static void DeleteBuffer( int buffer)
         {
             DeleteBuffers(1, ref buffer);
         }
@@ -1560,5 +1577,59 @@ namespace OpenTK.Audio
         // AL_API void AL_APIENTRY alDistanceModel( ALenum distanceModel );
 
         #endregion Global Parameters
+
+        #region Helpers
+
+        /// <summary>(Helper) Returns Source state information.</summary>
+        /// <param name="sid">The source to be queried.</param>
+        /// <returns>state information from OpenAL.</returns>
+        [CLSCompliant( false )]
+        public static ALSourceState GetSourceState( uint sid )
+        {
+            int temp;
+            AL.GetSource( sid, ALGetSourcei.SourceState, out temp );
+            return (ALSourceState) temp;
+        }
+
+        /// <summary>(Helper) Returns Source state information.</summary>
+        /// <param name="sid">The source to be queried.</param>
+        /// <returns>state information from OpenAL.</returns>
+        [CLSCompliant( true )]
+        public static ALSourceState GetSourceState( int sid )
+        {
+            int temp;
+            AL.GetSource( sid, ALGetSourcei.SourceState, out temp );
+            return (ALSourceState) temp;
+        }
+
+        /// <summary>(Helper) Returns Source type information.</summary>
+        /// <param name="sid">The source to be queried.</param>
+        /// <returns>type information from OpenAL.</returns>
+        [CLSCompliant( false )]
+        public static ALSourceType GetSourceType( uint sid )
+        {
+            int temp;
+            AL.GetSource( sid, ALGetSourcei.SourceType, out temp );
+            return (ALSourceType) temp;
+        }
+
+        /// <summary>(Helper) Returns Source type information.</summary>
+        /// <param name="sid">The source to be queried.</param>
+        /// <returns>type information from OpenAL.</returns>
+        [CLSCompliant( true )]
+        public static ALSourceType GetSourceType( int sid )
+        {
+            int temp;
+            AL.GetSource( sid, ALGetSourcei.SourceType, out temp );
+            return (ALSourceType) temp;
+        }
+
+        [CLSCompliant( true )]
+        public static ALDistanceModel GetDistanceModel( )
+        {
+            return (ALDistanceModel) AL.Get( ALGetInteger.DistanceModel );
+        }
+
+        #endregion Helpers
     }
 }

Source/OpenTK/Audio/OpenAL/AL/EffectsExtension.cs

@@ -17,6 +17,7 @@ namespace OpenTK.Audio
 {
     public partial class EffectsExtension
     {
+
         #region Helpers
 
         #region BindEffect
@@ -184,6 +185,22 @@ namespace OpenTK.Audio
             return temp;
         }
 
+        /// <summary>Generates a single effect object.</summary>
+        /// <param name="effect">A handle to the generated effect object.</param>
+        [CLSCompliant(false)]
+        public void GenEffect( out uint effect )
+        {
+            unsafe
+            {
+                fixed ( uint* ptr = &effect )
+                {
+                    Imported_alGenEffects( 1, ptr );
+                    effect = *ptr;
+                }
+            }
+
+        }
+
         #endregion alGenEffects
 
         #region alDeleteEffects
@@ -244,10 +261,21 @@ namespace OpenTK.Audio
         /// <summary>This function deletes one Effect only.</summary>
         /// <param name="effect">Pointer to an effect name/handle identifying the Effect Object to be deleted.</param>
         public void DeleteEffect(int effect)
+        {
+            DeleteEffects( 1, ref effect );
+        }
+
+        /// <summary>This function deletes one Effect only.</summary>
+        /// <param name="effect">Pointer to an effect name/handle identifying the Effect Object to be deleted.</param>
+        [CLSCompliant(false)]
+        public void DeleteEffect( ref uint effect )
         {
             unsafe
             {
-                Imported_alDeleteEffects(1, (uint*)&effect);
+                fixed ( uint* ptr = &effect )
+                {
+                    Imported_alDeleteEffects( 1, ptr );
+                }
             }
         }
 
@@ -560,7 +588,7 @@ namespace OpenTK.Audio
         }
 
         /// <summary>This function generates only one Filter.</summary>
-        /// <returns>Storage UInt32 for the new filter name/handle.</returns>
+        /// <returns>Storage Int32 for the new filter name/handle.</returns>
         public int GenFilter()
         {
             int filter;
@@ -568,6 +596,21 @@ namespace OpenTK.Audio
             return filter;
         }
 
+        /// <summary>This function generates only one Filter.</summary>
+        /// <param name="filter">Storage UInt32 for the new filter name/handle.</param>
+        [CLSCompliant(false)]
+        unsafe public void GenFilter( out uint filter )
+        {
+            unsafe
+            {
+                fixed ( uint* ptr = &filter )
+                {
+                    Imported_alGenFilters( 1, ptr );
+                    filter = *ptr;
+                }
+            }
+        }
+
         #endregion alGenFilters
 
         #region alDeleteFilters
@@ -632,6 +675,20 @@ namespace OpenTK.Audio
             DeleteFilters(1, ref filter);
         }
 
+        /// <summary>This function deletes one Filter only.</summary>
+        /// <param name="filter">Pointer to an filter name/handle identifying the Filter Object to be deleted.</param>
+        [CLSCompliant(false)]
+        public void DeleteFilter( ref uint filter )
+        {
+            unsafe
+            {
+                fixed ( uint* ptr = &filter )
+                {
+                    Imported_alDeleteFilters( 1, ptr );
+                }
+            }
+        }
+
         #endregion alDeleteFilters
 
         #region alIsFilter
@@ -864,14 +921,29 @@ namespace OpenTK.Audio
         }
 
         /// <summary>This function generates only one Auxiliary Effect Slot.</summary>
-        /// <returns>Storage UInt32 for the new auxiliary effect slot name/handle.</returns>
+        /// <returns>Storage Int32 for the new auxiliary effect slot name/handle.</returns>
-        public int GenAuxiliaryEffectSlots()
+        public int GenAuxiliaryEffectSlot()
         {
             int temp;
             GenAuxiliaryEffectSlots(1, out temp);
             return temp;
         }
 
+        /// <summary>This function generates only one Auxiliary Effect Slot.</summary>
+        /// <returns>Storage UInt32 for the new auxiliary effect slot name/handle.</returns>
+        [CLSCompliant(false)]
+        public void GenAuxiliaryEffectSlot( out uint slot )
+        {
+            unsafe
+            {
+                fixed ( uint* ptr = &slot )
+                {
+                    Imported_alGenAuxiliaryEffectSlots( 1, ptr );
+                    slot = *ptr;
+                }
+            }
+        }
+
         #endregion alGenAuxiliaryEffectSlots
 
         #region DeleteAuxiliaryEffectSlots
@@ -930,7 +1002,7 @@ namespace OpenTK.Audio
 
         /// <summary>This function deletes one AuxiliaryEffectSlot only.</summary>
         /// <param name="slot">Pointer to an auxiliary effect slot name/handle identifying the Auxiliary Effect Slot Object to be deleted.</param>
-        public void DeleteAuxiliaryEffectSlots(int slot)
+        public void DeleteAuxiliaryEffectSlot(int slot)
         {
             DeleteAuxiliaryEffectSlots(1, ref slot);
         }
@@ -938,9 +1010,15 @@ namespace OpenTK.Audio
         /// <summary>This function deletes one AuxiliaryEffectSlot only.</summary>
         /// <param name="slot">Pointer to an auxiliary effect slot name/handle identifying the Auxiliary Effect Slot Object to be deleted.</param>
         [CLSCompliant(false)]
-        public void DeleteAuxiliaryEffectSlots(uint slot)
+        public void DeleteAuxiliaryEffectSlot( ref uint slot)
         {
-            DeleteAuxiliaryEffectSlots(1, ref slot);
+            unsafe
+            {
+                fixed ( uint* ptr = &slot )
+                {
+                    Imported_alDeleteAuxiliaryEffectSlots( 1, ptr );
+                }
+            }
         }
 
         #endregion alDeleteAuxiliaryEffectSlots