OPmenu.xml

<?xml version="1.0" encoding="UTF-8"?>
<menuDocument>
    <menu>

        <addScriptItem id="opmenu.hammer_play_audio">
            <label>Play Audio</label>
            <parent>opmenu.actions_menu</parent>
            <insertBefore />
            <context>
                <expression>
                    from hammer_tools.settings import SettingsManager
                    if not SettingsManager.instance().value('hammer.audio.play.enable'):
                        return 0

                    node_type = kwargs['node'].type()
                    return node_type.category() in (hou.chopNodeTypeCategory(), hou.chopNetNodeTypeCategory()) or node_type.name() == 'chopnet'
                </expression>
            </context>
            <scriptCode>
from hammer_tools.nodeutils import playChopAudio

playChopAudio(kwargs['node'])
            </scriptCode>
        </addScriptItem>

        <addScriptItem id="opmenu.hammer_set_scene_audio">
            <label>Use as Scene Audio</label>
            <parent>opmenu.actions_menu</parent>
            <insertAfter>opmenu.hammer_play_audio</insertAfter>
            <context>
                <expression>
                    from hammer_tools.settings import SettingsManager
                    if not SettingsManager.instance().value('hammer.audio.set_scene_audio.enable'):
                        return 0

                    node_type = kwargs['node'].type()
                    return node_type.category() in (hou.chopNodeTypeCategory(), hou.chopNetNodeTypeCategory()) or node_type.name() == 'chopnet'
                </expression>
            </context>
            <scriptCode>
from hammer_tools.nodeutils import setSceneChopAudio

setSceneChopAudio(kwargs['node'])
            </scriptCode>
        </addScriptItem>

    </menu>
</menuDocument>