diff --git a/README b/README
--- a/README
+++ b/README
@@ -3,6 +3,8 @@
 
 [hsc3][hsc3] related utility programs.
 
+### hash-paren
+
 `hash-paren` is a simple minded [haskell][hs] pre-processor that
 extends the haskell `do` syntax by rewriting `#` parenthesised
 elements of a right hand side expression as monadic bindings.  Ie.
@@ -22,7 +24,7 @@
 [hsc3]: http://rd.slavepianos.org/?t=hsc3
 [hs]: http://haskell.org/
 
-© [rohan drape][rd], 2013, [gpl][gpl].
+© [rohan drape][rd], 2013-2014, [gpl][gpl].
 
 [rd]: http://rd.slavepianos.org/
 [gpl]: http://gnu.org/copyleft/
diff --git a/Sound/SC3/Server/Buffer/Send.hs b/Sound/SC3/Server/Buffer/Send.hs
new file mode 100644
--- /dev/null
+++ b/Sound/SC3/Server/Buffer/Send.hs
@@ -0,0 +1,20 @@
+module Sound.SC3.Server.Buffer.Send where
+
+import Data.Hashable {- hashable -}
+import System.Directory {- directory -}
+import System.FilePath {- filepath -}
+
+import qualified Sound.File.NeXT as F {- hsc3-sf -}
+import Sound.OSC {- hosc -}
+import Sound.SC3 {- hsc3 -}
+
+-- | Message to send data to scsynth via temporary audio file.
+b_tmp_allocRead :: (Hashable n,Floating n,Real n) => Int -> [n] -> IO Message
+b_tmp_allocRead nid d = do
+  tmp <- getTemporaryDirectory
+  let nc = 1
+      sr = 1
+      h = F.Header (length d) F.Float sr nc
+      nm = tmp </> show (hash d) <.> "au"
+  F.write nm h [d]
+  return (b_allocRead nid nm 0 0)
diff --git a/hs/hash-at.hs b/hs/hash-at.hs
new file mode 100644
--- /dev/null
+++ b/hs/hash-at.hs
@@ -0,0 +1,4 @@
+import Sound.SC3.RW.HA {- hsc3-rw -}
+
+main :: IO ()
+main = ha_rewrite_ghcF
diff --git a/hs/scsyndef-to-dot.hs b/hs/scsyndef-to-dot.hs
new file mode 100644
--- /dev/null
+++ b/hs/scsyndef-to-dot.hs
@@ -0,0 +1,29 @@
+import Control.Monad {- base -}
+import System.Environment {- base -}
+import System.FilePath {- filepath -}
+import System.Process {- process -}
+
+import qualified Sound.SC3.Server.Graphdef as R {- hsc3 -}
+import qualified Sound.SC3.Server.Graphdef.Read as R {- hsc3 -}
+
+import Sound.SC3.UGen.Dot {- hsc3-dot -}
+import qualified Sound.SC3.UGen.Dot.Internal as D
+
+scsyndef_to_dot :: Bool -> FilePath -> IO ()
+scsyndef_to_dot opt sy_nm = do
+  gr <- R.read_graphdef_file sy_nm
+  let dot_nm = replaceExtension sy_nm "dot"
+      svg_nm = replaceExtension sy_nm "svg"
+      (_,gr') = R.graphdef_to_graph gr
+      dr = D.dotGraph svg_options gr'
+  writeFile dot_nm dr
+  when opt (void (rawSystem "dot" ["-T","svg",dot_nm,"-o",svg_nm]))
+  return ()
+
+main :: IO ()
+main = do
+  arg <- getArgs
+  case arg of
+    [] -> putStrLn "scsyndef-to-dot [-svg] file..."
+    "-svg":nm -> mapM_ (scsyndef_to_dot True) nm
+    nm -> mapM_ (scsyndef_to_dot False) nm
diff --git a/hsc3-utils.cabal b/hsc3-utils.cabal
--- a/hsc3-utils.cabal
+++ b/hsc3-utils.cabal
@@ -1,39 +1,67 @@
 Name:              hsc3-utils
-Version:           0.14
+Version:           0.15
 Synopsis:          Haskell SuperCollider Utilities
 Description:       Haskell SuperCollider Utilities
 License:           GPL
 Category:          Sound
-Copyright:         (c) Rohan Drape, 2013
+Copyright:         (c) Rohan Drape, 2013-2014
 Author:            Rohan Drape
 Maintainer:        rd@slavepianos.org
 Stability:         Experimental
-Homepage:          http://rd.slavepianos.org/?t=hsc3-utils
-Tested-With:       GHC == 7.6.1
+Homepage:          http://rd.slavepianos.org/t/hsc3-utils
+Tested-With:       GHC == 7.8.2
 Build-Type:        Simple
 Cabal-Version:     >= 1.8
 
 Data-files:        README
 
+Library
+  Build-Depends:   base == 4.*,
+                   directory,
+                   filepath,
+                   hashable,
+                   hosc == 0.15.*,
+                   hsc3 == 0.15.*,
+                   hsc3-sf == 0.15.*
+  GHC-Options:     -Wall -fwarn-tabs
+  Exposed-modules: Sound.SC3.Server.Buffer.Send
+
+executable hsc3-hash-at
+  build-depends:   base == 4.*,
+                   hsc3-rw == 0.15.*
+  hs-source-dirs:  hs
+  main-is:         hash-at.hs
+  ghc-options:     -Wall -fwarn-tabs
+
 executable hsc3-hash-paren
   build-depends:   base == 4.*,
-                   hsc3-rw == 0.14.*
+                   hsc3-rw == 0.15.*
   hs-source-dirs:  hs
   main-is:         hash-paren.hs
   ghc-options:     -Wall -fwarn-tabs
 
 executable hsc3-id-rewrite
   build-depends:   base == 4.*,
-                   hsc3-rw == 0.14.*
+                   hsc3-rw == 0.15.*
   hs-source-dirs:  hs
   main-is:         id-rewrite.hs
   ghc-options:     -Wall -fwarn-tabs
 
 executable hsc3-id-clear
   build-depends:   base == 4.*,
-                   hsc3-rw == 0.14.*
+                   hsc3-rw == 0.15.*
   hs-source-dirs:  hs
   main-is:         id-clear.hs
+  ghc-options:     -Wall -fwarn-tabs
+
+executable hsc3-scsyndef-to-dot
+  build-depends:   base == 4.*,
+                   filepath,
+                   hsc3-dot == 0.15.*,
+                   hsc3 == 0.15.*,
+                   process
+  hs-source-dirs:  hs
+  main-is:         scsyndef-to-dot.hs
   ghc-options:     -Wall -fwarn-tabs
 
 Source-Repository  head