diff --git a/build.xml b/build.xml
index b4ed8eff..f3c2cd8e 100644
--- a/build.xml
+++ b/build.xml
@@ -214,6 +214,36 @@
     <delete file="${deploy.dir}/aslib-config.xml"/>
   </target>
 
+  <!-- checks whether our thane library needs building -->
+  <target name="checkabclib">
+    <condition property="no_build_abclib"><or>
+      <not><available classname="macromedia.asc.embedding.ScriptCompiler"
+                      classpathref="classpath"/></not>
+      <uptodate targetfile="${deploy.dir}/${lib.name}-abc.abc">
+        <srcfiles dir="src/as" includes="**/*.as"/>
+        <srcfiles dir="etc" includes="asc-files.txt"/>
+        <srcfiles dir="${deploy.dir}/lib" includes="*.abc"/>
+      </uptodate>
+    </or></condition>
+  </target>
+
+  <!-- builds our thane library -->
+  <target name="abclib" unless="no_build_abclib" depends="checkabclib">
+    <taskdef name="asc" classname="flex.ant.AscLibTask" classpathref="classpath"/>
+    <dirname property="abs.deploy.dir" file="${deploy.dir}/somefile.txt"/>
+    <asc as3="true" strict="true" classpathref="classpath"
+            outdir="${abs.deploy.dir}" out="${lib.name}-abc">
+      <import dir="${deploy.dir}/lib">
+        <include name="builtin.abc"/>
+        <include name="thane.abc"/>
+        <include name="narya-abc.abc"/>
+      </import>
+      <filespec dir="src/as">
+        <includesfile name="etc/asc-files.txt"/>
+      </filespec>
+    </asc>
+  </target>
+
   <!-- builds the javadoc documentation -->
   <target name="javadoc" depends="prepare">
     <javadoc sourcepath="src/java" packagenames="com.threerings.*"
@@ -256,7 +286,7 @@
   <target name="all" depends="clean,dist,javadoc,dist"/>
 
   <!-- builds our distribution files (war and jar) -->
-  <target name="dist" depends="prepare,compile,tcompile,procstream,aslib">
+  <target name="dist" depends="prepare,compile,tcompile,procstream,aslib,abclib">
     <!-- build our various jar files -->
     <jar destfile="${deploy.dir}/${lib.name}-parlor.jar">
       <fileset dir="${classes.dir}" includes="rsrc/i18n/game/**"/>
diff --git a/etc/asc-files.txt b/etc/asc-files.txt
new file mode 100644
index 00000000..046e3952
--- /dev/null
+++ b/etc/asc-files.txt
@@ -0,0 +1,16 @@
+com/threerings/parlor/data/*.as
+com/threerings/parlor/util/*.as
+com/threerings/parlor/game/data/GameConfig.as
+com/threerings/parlor/game/data/GameAI.as
+com/threerings/parlor/game/client/GameConfigurator.as
+com/threerings/parlor/client/TableService.as
+com/threerings/parlor/client/ParlorService.as
+com/threerings/parlor/client/ParlorService_InviteListener.as
+com/threerings/parlor/client/TableConfigurator.as
+com/threerings/parlor/client/GameReadyObserver.as
+com/threerings/parlor/client/Invitation.as
+com/threerings/parlor/client/InvitationResponseObserver.as
+com/threerings/parlor/client/ParlorDirector.as
+com/threerings/parlor/client/ParlorReceiver.as
+com/threerings/parlor/client/ParlorDecoder.as
+com/threerings/parlor/client/InvitationHandler.as
diff --git a/etc/libs-incl.xml b/etc/libs-incl.xml
index 48e16ec2..571326ba 100644
--- a/etc/libs-incl.xml
+++ b/etc/libs-incl.xml
@@ -14,6 +14,8 @@
     <include name="retroweaver-all-1.2.2.jar"/>
     <include name="velocity-1.5-dev.jar"/>
     <include name="xml-writer.jar"/>
+    <include name="flexTasks.jar"/>
+    <include name="asc.jar"/>
     <!-- these might be named lib-SNAPSHOT-0.0.jar or lib.jar -->
     <include name="samskivert*.jar"/>
     <include name="narya-base*.jar"/>
@@ -26,5 +28,9 @@
     <!-- ActionScript dependencies -->
     <include name="naryalib.swc"/>
     <include name="nenyalib.swc"/>
+    <!-- Thane dependencies -->
+    <include name="thane.abc"/>
+    <include name="builtin.abc"/>
+    <include name="narya-abc.abc"/>
   </fileset>
 </project>