[mlaggner]

I do not have any Mac without Java 6 to test here, but you could do a test for me:

navigate to /Applications/tinyMediaManager.app/ and create a backup of Info.plist

after that, remove the following lines from Info.plist

Code:

<key>Java</key>
    <dict>
      <key>MainClass</key>
      <string>com.threerings.getdown.launcher.Getdown</string>
      <key>JVMVersion</key>
      <string>1.6+</string>
      <key>ClassPath</key>
      <array>
        <string>$JAVAROOT/LICENSE</string>
        <string>$JAVAROOT/changelog.txt</string>
        <string>$JAVAROOT/env.txt</string>
        <string>$JAVAROOT/getdown.jar</string>
        <string>$JAVAROOT/getdown.txt</string>
        <string>$JAVAROOT/launch.jnlp</string>
        <string>$JAVAROOT/lib/DJNativeSwing-SWT.jar</string>
        <string>$JAVAROOT/lib/DJNativeSwing.jar</string>
        <string>$JAVAROOT/lib/JSplitButton.jar</string>
        <string>$JAVAROOT/lib/JTattoo.jar</string>
        <string>$JAVAROOT/lib/LightBox.jar</string>
        <string>$JAVAROOT/lib/Scaling-bin.jar</string>
        <string>$JAVAROOT/lib/api-common.jar</string>
        <string>$JAVAROOT/lib/asm.jar</string>
        <string>$JAVAROOT/lib/betterbeansbinding-core.jar</string>
        <string>$JAVAROOT/lib/betterbeansbinding-el.jar</string>
        <string>$JAVAROOT/lib/betterbeansbinding-swingbinding.jar</string>
        <string>$JAVAROOT/lib/commons-codec.jar</string>
        <string>$JAVAROOT/lib/commons-io.jar</string>
        <string>$JAVAROOT/lib/commons-lang3.jar</string>
        <string>$JAVAROOT/lib/core.jar</string>
        <string>$JAVAROOT/lib/fanarttvapi.jar</string>
        <string>$JAVAROOT/lib/forms.jar</string>
        <string>$JAVAROOT/lib/glazedlists.jar</string>
        <string>$JAVAROOT/lib/gson.jar</string>
        <string>$JAVAROOT/lib/httpclient.jar</string>
        <string>$JAVAROOT/lib/httpcore.jar</string>
        <string>$JAVAROOT/lib/httpmime.jar</string>
        <string>$JAVAROOT/lib/image-viewer.jar</string>
        <string>$JAVAROOT/lib/imgscalr-lib.jar</string>
        <string>$JAVAROOT/lib/jackson-annotations.jar</string>
        <string>$JAVAROOT/lib/jackson-core.jar</string>
        <string>$JAVAROOT/lib/jackson-databind.jar</string>
        <string>$JAVAROOT/lib/jcl-over-slf4j.jar</string>
        <string>$JAVAROOT/lib/jdom.jar</string>
        <string>$JAVAROOT/lib/jgoodies-common.jar</string>
        <string>$JAVAROOT/lib/jmte-unbundled.jar</string>
        <string>$JAVAROOT/lib/jna.jar</string>
        <string>$JAVAROOT/lib/jsoup.jar</string>
        <string>$JAVAROOT/lib/log4j-over-slf4j.jar</string>
        <string>$JAVAROOT/lib/logback-classic.jar</string>
        <string>$JAVAROOT/lib/logback-core.jar</string>
        <string>$JAVAROOT/lib/objectdb.jar</string>
        <string>$JAVAROOT/lib/platform.jar</string>
        <string>$JAVAROOT/lib/quaqua-filechooser-only.jar</string>
        <string>$JAVAROOT/lib/resources.jar</string>
        <string>$JAVAROOT/lib/retrofit.jar</string>
        <string>$JAVAROOT/lib/rottentomatoesapi.jar</string>
        <string>$JAVAROOT/lib/slf4j-api.jar</string>
        <string>$JAVAROOT/lib/themoviedbapi.jar</string>
        <string>$JAVAROOT/lib/thetvdbapi.jar</string>
        <string>$JAVAROOT/lib/trakt-java.jar</string>
        <string>$JAVAROOT/lib/twinkle.jar</string>
        <string>$JAVAROOT/lib/versions.txt</string>
        <string>$JAVAROOT/lib/xmlrpc-client.jar</string>
        <string>$JAVAROOT/locale/messages_cs.properties</string>
        <string>$JAVAROOT/locale/messages_da.properties</string>
        <string>$JAVAROOT/locale/messages_de.properties</string>
        <string>$JAVAROOT/locale/messages_es.properties</string>
        <string>$JAVAROOT/locale/messages_fr.properties</string>
        <string>$JAVAROOT/locale/messages_hu.properties</string>
        <string>$JAVAROOT/locale/messages_it.properties</string>
        <string>$JAVAROOT/locale/messages_ko.properties</string>
        <string>$JAVAROOT/locale/messages_nl.properties</string>
        <string>$JAVAROOT/locale/messages_no.properties</string>
        <string>$JAVAROOT/locale/messages_pl.properties</string>
        <string>$JAVAROOT/locale/messages_pt.properties</string>
        <string>$JAVAROOT/locale/messages_ro.properties</string>
        <string>$JAVAROOT/locale/messages_ru.properties</string>
        <string>$JAVAROOT/locale/messages_sk.properties</string>
        <string>$JAVAROOT/locale/messages_sv.properties</string>
        <string>$JAVAROOT/locale/messages_tr.properties</string>
        <string>$JAVAROOT/locale/messages_vi.properties</string>
        <string>$JAVAROOT/locale/messages_zh.properties</string>
        <string>$JAVAROOT/native/mac-i386/libmediainfo.dylib</string>
        <string>$JAVAROOT/native/mac-i386/libquaqua.jnilib</string>
        <string>$JAVAROOT/native/mac-x86_64/libmediainfo.dylib</string>
        <string>$JAVAROOT/native/mac-x86_64/libquaqua.jnilib</string>
        <string>$JAVAROOT/native/mac-x86_64/libquaqua64.dylib</string>
        <string>$JAVAROOT/native/mac-x86_64/libquaqua64.jnilib</string>
        <string>$JAVAROOT/objectdb.conf</string>
        <string>$JAVAROOT/splashscreen.png</string>
        <string>$JAVAROOT/templates/DetailExample2Html.jar</string>
        <string>$JAVAROOT/templates/DetailExampleHtml.jar</string>
        <string>$JAVAROOT/templates/ExcelXml.jar</string>
        <string>$JAVAROOT/templates/ListExampleCsv.jar</string>
        <string>$JAVAROOT/templates/ListExampleHtml.jar</string>
        <string>$JAVAROOT/templates/ListExampleXml.jar</string>
        <string>$JAVAROOT/templates/SimpleConfluence.jar</string>
        <string>$JAVAROOT/templates/TvShowDetailExampleXml.jar</string>
        <string>$JAVAROOT/templates/jQueryliscious.jar</string>
        <string>$JAVAROOT/templates/readme.txt</string>
        <string>$JAVAROOT/tmm.jar</string>
        <string>$JAVAROOT/tmm.png</string>
        <string>$JAVAROOT/version</string>
      </array>
      <key>VMOptions</key>
      <string/>
      <key>WorkingDirectory</key>
      <string>$JAVAROOT</string>
      <key>Arguments</key>
      <string>.</string>
    </dict>

maybe that causes OSX to force asking for Java..