diff --git a/Makefile b/Makefile
index 62488a2..3e2e30d 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ else
 	CXXFLAGS := -pipe -O3 -fno-rtti -fno-exceptions -DNDEBUG
 endif
 
-CXXFLAGS += $(LASH_CFLAGS) $(FLTK_CFLAGS) -DINSTALL_PREFIX=\"$(prefix)\" -DVERSION=\"$(VERSION)\"
+CXXFLAGS += $(libsndfile_CFLAGS) $(LASH_CFLAGS) $(FLTK_CFLAGS) -DINSTALL_PREFIX=\"$(prefix)\" -DVERSION=\"$(VERSION)\"
 
 include scripts/colors
 
diff --git a/Timeline/LASH_Client.C b/Timeline/LASH_Client.C
index deeba02..775bfab 100644
--- a/Timeline/LASH_Client.C
+++ b/Timeline/LASH_Client.C
@@ -32,7 +32,7 @@ LASH_Client::~LASH_Client ( )
     /* TODO: anything? */
 }
 
-#ifdef USE_LASH
+#ifdef HAVE_LASH
 
 #include <lash/lash.h>
 
diff --git a/Timeline/makefile.inc b/Timeline/makefile.inc
index ab30abe..0413b1b 100644
--- a/Timeline/makefile.inc
+++ b/Timeline/makefile.inc
@@ -43,7 +43,7 @@ Timeline_OBJS:=$(Timeline_SRCS:.C=.o)
 # $(Timeline_OBJS): Makefile
 # $(Timeline_OBJS): make.conf
 
-Timeline_LIBS := $(FLTK_LIBS) $(JACK_LIBS) $(SNDFILE_LIBS) $(LASH_LIBS)
+Timeline_LIBS := $(FLTK_LIBS) $(JACK_LIBS) $(libsndfile_LIBS) $(LASH_LIBS)
 
 Timeline/timeline: $(Timeline_OBJS) FL
 	@ echo -n Linking timeline...
diff --git a/configure b/configure
index 85dd4f6..588e851 100755
--- a/configure
+++ b/configure
@@ -1,119 +1,27 @@
 #!/bin/sh
 #
 # Copyright (C) 2008 Jonathan Moore Liles
-#
+# This file is licensed under version 2 of the GPL.
 
-. scripts/colors
-
-
-fatal ()
-{
-    echo "$BOLD$RED$*$SGR0"
-    exit 255
-}
-
-ask ()
-{
-   echo -n "$1 [$BOLD$3$SGR0] "
-   read R
-   echo "${2}=${R:-$3}" >> make.conf
-}
-
-ok ()
-{
-    echo "$BOLD${GREEN}ok${SGR0}."
-}
-
-failed ()
-{
-    echo "$BOLD${RED}failed!${SGR0}"
-    rm -f make.conf
-}
+. scripts/config-funcs
 
 [ $# -gt 0 ] && fatal "This is not an autoconf script. Run it without any options and you will be prompted."
 
-echo "-- Configuration:"
+begin
 
-# get the old values
-if [ -f make.conf ]
-then
-    OIFS="$IFS"
-    IFS=''
-    eval "`sed -n '/^## options/{ : i; /^## libs/{ q }; p; n; b i }' make.conf`"
-    IFS="$OIFS"
-fi
-
-echo "# This is a generated file. Any changes may be lost!" > make.conf
-
-echo "## options" >> make.conf
+begin_options
 
 ask "Install prefix?" prefix ${prefix:-/usr/local}
 ask "Use LASH?" USE_LASH ${USE_LASH:-yes}
 ask "Build for debugging?" MAINTAINER_MODE ${MAINTAINER_MODE:-no}
 
-echo "## libs/flags" >> make.conf
+begin_tests
 
-# tests
+require_FLTK 1 1 7
+require_command FLUID fluid
+require_package JACK 0.103.0 jack
+require_package libsndfile 1.0.17 sndfile
 
-echo -n "Checking for ${BOLD}FLTK${SGR0}..."
+[ $USE_LASH = yes ] && require_package LASH 0.5.4 lash-1.0
 
-FLTK_VERSION=`fltk-config --version`
-
-FLTK_VERSION_MAJOR=`echo $FLTK_VERSION | cut -d'.' -f1`
-FLTK_VERSION_MINOR=`echo $FLTK_VERSION | cut -d'.' -f2`
-FLTK_VERSION_PATCH=`echo $FLTK_VERSION | cut -d'.' -f3`
-
-if ! ( [ $FLTK_VERSION_MAJOR -ge 1 ] && [ $FLTK_VERSION_MINOR -ge 1 ] && [ $FLTK_VERSION_PATCH -ge 7 ] )
-then
-    failed
-    fatal "The installed FLTK version ($FLTK_VERSION) is too old."
-else
-    ok
-fi
-
-echo "FLTK_LIBS=`fltk-config --use-images --ldflags`" >> make.conf
-echo "FLTK_CFLAGS=`fltk-config --cflags`" >> make.conf
-
-check_command ()
-{
-    echo -n "Checking for ${BOLD}$1${SGR0}..."
-
-    if ! [ -x "`which $2`" ]
-    then
-	failed
-	fatal "Command $1 not found."
-    else
-	ok
-    fi
-}
-
-check_command FLUID fluid
-
-# 
-
-check ()
-{
-    echo -n "Checking for $BOLD$1$SGR0..."
-    if ! pkg-config --exists $3
-    then
-    	failed
-	fatal "Required package $1 doesn't appear to be installed."
-    elif ! pkg-config --atleast-version $2 $3
-    then
-        failed
-        fatal "The installed version of $1 (`pkg-config --mod-version $3`) is too old."
-    fi
-
-    ok
-    return 0
-}
-
-check JACK 0.103.0 jack && echo "JACK_LIBS=`pkg-config --libs jack`" >> make.conf
-check libSNDFILE 1.0.17 sndfile && echo "SNDFILE_LIBS=`pkg-config --libs sndfile`" >> make.conf
-
-grep -q 'USE_LASH=yes' make.conf &&
-check LASH 0.5.4 lash-1.0 &&
-( echo "LASH_LIBS=`pkg-config --libs lash-1.0`" >> make.conf
-  echo "LASH_CFLAGS=-DUSE_LASH `pkg-config --cflags lash-1.0`" >> make.conf )
-
-echo "-- Configuration complete."
+end
diff --git a/scripts/config-funcs b/scripts/config-funcs
new file mode 100644
index 0000000..6a493a0
--- /dev/null
+++ b/scripts/config-funcs
@@ -0,0 +1,141 @@
+#!/bin/sh
+#
+# Copyright (C) 2008 Jonathan Moore Liles
+# This file is licensed under version 2 of the GPL.
+
+. scripts/colors
+
+# support functions for 'configure' scripts.
+
+fatal ()
+{
+    echo "$BOLD$RED$*$SGR0" > /dev/stderr
+    exit 255
+}
+
+ask ()
+{
+   local answer default
+
+   default="`eval echo \\$$2`"
+   default=${default:-$3}
+
+   echo -n "$BLACK$BOLD::$SGR0 $1 [$BOLD$3$SGR0] "
+   read answer
+   echo "${2}=${answer:-$default}" >> make.conf
+}
+
+ok ()
+{
+    echo "$BOLD${GREEN}ok${SGR0}."
+}
+
+failed ()
+{
+    echo "$BOLD${RED}failed!${SGR0}" > /dev/stderr
+    rm -f make.conf
+}
+
+extract_options ()
+{
+    local OIFS
+
+    if [ -f make.conf ]
+    then
+        OIFS="$IFS"
+        IFS=''
+        eval "`sed -n '/^## options/{ : i; /^## libs/{ q }; p; n; b i }' make.conf`"
+        IFS="$OIFS"
+    fi
+}
+
+begin ()
+{
+    echo -n "Checking sanity..."
+    require_command pkg-config pkg-config > /dev/null
+    require_command sed sed > /dev/null
+    ok
+}
+
+begin_options ()
+{
+    # get the old values
+    extract_options
+
+    echo "# This is a generated file. Any changes may be lost!" > make.conf
+    echo "## options" >> make.conf
+
+    echo "--- Configuration required ---"
+}
+
+begin_tests ()
+{
+    echo "## libs/flags" >> make.conf
+    extract_options
+}
+
+append ()
+{
+    echo "$1" >> make.conf
+}
+
+end ()
+{
+    echo "--- Configuration complete ---"
+}
+
+require_command ()
+{
+    echo -n "Checking for ${BOLD}$1${SGR0}..."
+
+    if ! [ -x "`which $2`" ]
+    then
+	failed
+	fatal "Command $1 not found."
+    else
+	ok
+    fi
+}
+
+require_package ()
+{
+    echo -n "Checking for $BOLD$1$SGR0..."
+    if ! pkg-config --exists $3
+    then
+    	failed
+	fatal "Required package $1 doesn't appear to be installed."
+    elif ! pkg-config --atleast-version $2 $3
+    then
+        failed
+        fatal "The installed version of $1 (`pkg-config --mod-version $3`) is too old."
+    fi
+
+    append "${1}_LIBS=`pkg-config --libs $3`"
+    append "${1}_CFLAGS=-DHAVE_${1} `pkg-config --cflags $3`"
+
+    ok
+    return 0
+}
+
+
+require_FLTK ()
+{
+    echo -n "Checking for ${BOLD}FLTK${SGR0}..."
+
+    FLTK_VERSION=`fltk-config --version`
+
+    FLTK_VERSION_MAJOR=`echo $FLTK_VERSION | cut -d'.' -f1`
+    FLTK_VERSION_MINOR=`echo $FLTK_VERSION | cut -d'.' -f2`
+    FLTK_VERSION_PATCH=`echo $FLTK_VERSION | cut -d'.' -f3`
+
+    if ! ( [ $FLTK_VERSION_MAJOR -ge $1 ] && [ $FLTK_VERSION_MINOR -ge $2 ] && [ $FLTK_VERSION_PATCH -ge $3 ] )
+    then
+        failed
+        fatal "The installed FLTK version ($FLTK_VERSION) is too old."
+    else
+        ok
+    fi
+
+    append "FLTK_LIBS=`fltk-config --use-images --ldflags`"
+    append "FLTK_CFLAGS=`fltk-config --cflags`"
+}