<?php

namespace Protalk\AdminBundle\Admin;

use Sonata\AdminBundle\Admin\Admin;
use Sonata\AdminBundle\Datagrid\ListMapper;
use Sonata\AdminBundle\Datagrid\DatagridMapper;
use Sonata\AdminBundle\Form\FormMapper;

class FeedtypeAdmin extends Admin
{
    /**
     * Default Datagrid values
     *
     * @var array
     */
    protected $datagridValues = array(
        '_page' => 1,
        '_sort_order' => 'ASC',
        '_sort_by' => 'name'
    );

    protected function configureFormFields(FormMapper $formMapper)
    {
        $formMapper->add('name')
            ->add(
                'className',
                'choice',
                array(
                    'choices' => array(
                        'feedburner' => 'feedburner',
                        'rss' => 'rss',
                        'dpc' => 'dpc',
                        'aws' => 'aws',
                        'bliptv' => 'bliptv',
                        'youtube' => 'youtube'
                    )
                )
            );
    }

    protected function configureDatagridFilters(DatagridMapper $datagridMapper)
    {
        $datagridMapper->add('name');
    }

    protected function configureListFields(ListMapper $listMapper)
    {
        $listMapper->addIdentifier('name')->add('className');
    }
}

<?php

namespace Protalk\AdminBundle\Admin;

use Sonata\AdminBundle\Admin\Admin;
use Sonata\AdminBundle\Datagrid\ListMapper;
use Sonata\AdminBundle\Datagrid\DatagridMapper;
use Sonata\AdminBundle\Form\FormMapper;

class FeedtypeAdmin extends Admin
{
    /**
     * Default Datagrid values
     *
     * @var array
     */
    protected $datagridValues = array(
        '_page' => 1,
        '_sort_order' => 'ASC',
        '_sort_by' => 'name'
    );

    protected function configureFormFields(FormMapper $formMapper)
    {
        $formMapper->add('name')
            ->add(
                'className',
                'choice',
                array(
                    'choices' => array(
                        'feedburner' => 'feedburner',
                        'rss' => 'rss',
                        'dpc' => 'dpc',
                        'aws' => 'aws',
                        'bliptv' => 'bliptv',
                        'youtube' => 'youtube',
                        'vimeo' => 'vimeo'
                    )
                )
            );
    }

    protected function configureDatagridFilters(DatagridMapper $datagridMapper)
    {
        $datagridMapper->add('name');
    }

    protected function configureListFields(ListMapper $listMapper)
    {
        $listMapper->addIdentifier('name')->add('className');
    }
}

Add vimeo as className in FeedTypeAdmin.php
Add vimeo as className in FeedTypeAdmin.php
