diff --git a/build.xml b/build.xml
index e1fddc38..2f5e3049 100644
--- a/build.xml
+++ b/build.xml
@@ -428,4 +428,14 @@
      <delete dir="${deploy.dir}/snapshot"/>
   </target>
 
+  <property name="scene" value="idyll"/>
+  <target name="miso-viewer" depends="compile,test-tsbundles,test-cbundles"
+          description="Runs the Miso scene viewer.">
+    <java classname="com.threerings.miso.viewer.ViewerApp"
+          fork="true" classpathref="test.classpath">
+      <sysproperty key="resource_dir" value="${testrsrc.dir}"/>
+      <sysproperty key="no_unpack_resources" value="true"/>
+      <arg value="${testrsrc.dir}/scenes/${scene}.xml"/>
+    </java>
+  </target>
 </project>
diff --git a/tests/build.xml b/tests/build.xml
deleted file mode 100644
index fda99303..00000000
--- a/tests/build.xml
+++ /dev/null
@@ -1,168 +0,0 @@
-<!-- build configuration -->
-<project name="narya tests" default="compile" basedir=".">
-
-  <!-- things you may want to change -->
-  <property name="junit.fork"     value="true"/>
-
-  <!-- things you probably don't want to change -->
-  <property name="test.dir"   value="${basedir}"/>
-  <property name="src.dir"    value="src/java"/>
-  <property name="deploy.dir" value="dist"/>
-
-  <property name="cbundle.dir" value="${basedir}/rsrc/bundles/components"/>
-  <property name="tbundle.dir" value="${basedir}/rsrc/bundles/tiles"/>
-
-  <!-- import some targets to check dependency availability -->
-  <import file="../etc/depends-incl.xml"/>
-
-  <!-- declare our classpath -->
-  <property name="classes.dir" value="${deploy.dir}/classes"/>
-  <property name="narya.classes.dir" value="../${deploy.dir}/classes"/>
-  <path id="classpath">
-    <pathelement location="${classes.dir}"/>
-    <pathelement location="${narya.classes.dir}"/>
-    <fileset dir="../${deploy.dir}/lib" includes="**/*.jar"/>
-  </path>
-
-  <!-- generates additional methods for distributed object classes -->
-  <target name="gendobj" depends="prepare"> 
-    <taskdef name="dobj" classname="com.threerings.presents.tools.GenDObjectTask"
-             classpathref="classpath"/>
-    <!-- make sure the dobject class files are all compiled -->
-    <javac srcdir="src/java" destdir="${classes.dir}" includeAntRuntime="false"
-           debug="on" optimize="${build.optimize}" deprecation="on" source="1.4" target="1.4">
-      <classpath refid="classpath"/>
-      <include name="**/*Object.java"/>
-    </javac>
-    <!-- now generate the associated files -->
-    <dobj classpathref="classpath">
-      <fileset dir="src/java" includes="**/*Object.java"/>
-    </dobj>
-  </target>
-
-  <!-- generates marshaller and dispatcher classes for all invocation service declarations -->
-  <target name="genservice">
-    <apply executable="../bin/genservice" failonerror="true" parallel="true">
-      <arg value="--classpath"/>
-      <arg value="${classes.dir}:${narya.classes.dir}"/>
-      <arg value="--sourcedir"/>
-      <arg value="src/java"/>
-      <fileset dir="src/java" includes="**/*Service.java"/>
-    </apply>
-  </target>
-
-  <!-- generates sender and decoder classes for all invocation receiver declarations -->
-  <target name="genreceiver">
-    <apply executable="../bin/genreceiver" failonerror="true" parallel="true">
-      <arg value="--classpath"/>
-      <arg value="${classes.dir}:${narya.classes.dir}"/>
-      <arg value="--sourcedir"/>
-      <arg value="src/java"/>
-      <fileset dir="src/java" includes="**/*Receiver.java"/>
-    </apply>
-  </target>
-
-  <!-- prepares the application directories -->
-  <target name="prepare">
-    <mkdir dir="${deploy.dir}"/>
-    <mkdir dir="${classes.dir}"/>
-    <copy todir="${classes.dir}">
-      <fileset dir="${src.dir}" includes="**/*.properties"/>
-    </copy>
-    <copy todir="${classes.dir}/rsrc">
-      <fileset dir="rsrc" includes="**/*"/>
-    </copy>
-  </target>
-
-  <!-- cleans out the installed application -->
-  <target name="clean">
-    <delete dir="${deploy.dir}"/>
-    <delete file="rsrc/bundles/tiles/tilesets.map"/>
-    <delete file="rsrc/bundles/components/components.map"/>
-    <delete file="rsrc/bundles/components/metadata.jar"/>
-    <delete><fileset dir="rsrc/bundles/tiles" includes="**/bundle.jar"/></delete>
-    <delete><fileset dir="rsrc/bundles/components" includes="**/components.jar"/></delete>
-  </target>
-
-  <!-- build the java class files -->
-  <target name="compile" depends="check-available,prepare">
-    <javac srcdir="${src.dir}" destdir="${classes.dir}" includeAntRuntime="false"
-      debug="on" optimize="off" deprecation="off">
-      <classpath refid="classpath"/>
-      <exclude name="com/threerings/openal/**" unless="build.openal"/>
-      <exclude name="com/threerings/**/tools/xml/**" unless="build.xml"/>
-      <exclude name="com/threerings/miso/viewer/**" unless="build.xml"/>
-      <compilerarg value="-Xlint"/>
-      <compilerarg value="-Xlint:-serial"/>
-    </javac>
-  </target>
-
-  <!-- test the component metadata bundling process -->
-  <target name="cbundles" description="Build component bundles.">
-    <!-- define our tasks -->
-    <taskdef name="metabundle" classpathref="classpath"
-      classname="com.threerings.cast.bundle.tools.MetadataBundlerTask"/>
-    <taskdef name="cbundle" classpathref="classpath"
-      classname="com.threerings.cast.bundle.tools.ComponentBundlerTask"/>
-
-    <!-- build the metadata bundles -->
-    <metabundle actiondef="${cbundle.dir}/actions.xml" classdef="${cbundle.dir}/classes.xml"
-                target="${cbundle.dir}/metadata.jar"/>
-
-    <!-- blow away the components map file so that we get a consistent -->
-    <!-- mapping every time-->
-    <delete file="${cbundle.dir}/components.map"/>         
-
-    <!-- build the component bundles -->
-    <cbundle actiondef="${cbundle.dir}/actions.xml" target="${cbundle.dir}/pirate/components.jar"
-             mapfile="${cbundle.dir}/components.map" root="${cbundle.dir}/pirate">
-      <fileset dir="${cbundle.dir}/pirate" includes="**/*.png" excludes="components/**"/>
-    </cbundle>
-    <cbundle actiondef="${cbundle.dir}/actions.xml" target="${cbundle.dir}/vessel/components.jar"
-             mapfile="${cbundle.dir}/components.map" root="${cbundle.dir}/vessel">
-      <fileset dir="${cbundle.dir}/vessel" includes="**/*.png"
-        excludes="components/**"/>
-    </cbundle>
-  </target>
-
-  <!-- test the tileset bundling process -->
-  <target name="tsbundles" description="Build tileset bundles.">
-    <!-- blow away the tilesetid map file so that we get a consistent -->
-    <!-- mapping every time-->
-    <delete file="${tbundle.dir}/tilesets.map"/>         
-
-    <!-- build the tileset bundles -->
-    <taskdef name="tilebundle" classpathref="classpath"
-      classname="com.threerings.media.tile.bundle.tools.TileSetBundlerTask"/>
-    <tilebundle config="${tbundle.dir}/bundler-config.xml" mapfile="${tbundle.dir}/tilesets.map">
-      <fileset dir="${tbundle.dir}/ground" includes="**/*.xml"/>
-    </tilebundle>
-    <tilebundle config="${tbundle.dir}/bundler-config.xml"
-      mapfile="${tbundle.dir}/tilesets.map">
-      <fileset dir="${tbundle.dir}/objects" includes="**/*.xml"/>
-    </tilebundle>
-
-    <!-- build the fringe configurations -->
-    <taskdef name="conffringe" classpathref="classpath"
-      classname="com.threerings.miso.tile.tools.CompileFringeConfigurationTask"/>
-    <conffringe
-     tilesetmap="${tbundle.dir}/tilesets.map"
-     fringedef="${basedir}/rsrc/config/miso/tile/fringeconf.xml"
-     target="${basedir}/rsrc/config/miso/tile/fringeconf.dat"/>
-  </target>
-
-  <target name="tests" depends="compile,cbundles,tsbundles" description="Runs the tests.">
-    <junit printsummary="no" haltonfailure="yes" fork="${junit.fork}">
-      <classpath refid="classpath"/>
-      <sysproperty key="test_dir" value="${test.dir}"/>
-      <sysproperty key="resource_dir" value="${test.dir}/rsrc"/>
-      <sysproperty key="no_unpack_resources" value="true"/>
-      <formatter type="brief" usefile="false"/>
-      <batchtest>
-        <fileset dir="${src.dir}">
-          <include name="**/*Test.java"/>
-        </fileset>
-      </batchtest>
-    </junit>
-  </target>
-</project>