Using iPodMusicPlayer would affect the actual iPod volume setting as well. If you want to avoid that, use this:

#import &lt;MediaPlayer/MediaPlayer.h&gt;
// ...
MPMusicPlayerController *musicPlayer = [MPMusicPlayerController applicationMusicPlayer];
musicPlayer.volume = 1.0f; 


As the user holex correctly mentioned the property volume in MPMusicPlayerController is deprecated in iOS 7.

iOS: Change Device Volume
I'm receiving this error: [27-Jun-2012 18:22:39 UTC] PHP Fatal error:  Call to undefined function plugin_basename() in /XXXX/public_html/wp-content/plugins/price-update/price-update.php on line 68:

            //We set the plugin basename here, could manually set it, but this is for demonstration purposes
            $this-&gt;plugin_basename = plugin_basename(__FILE__);


in this block of code:

class PriceUpdate extends mtekk_admin
{
        protected $version = '0.0.1';
        protected $full_name = 'Price Update';
        protected $short_name = 'Price Update';
        protected $access_level = 'manage_options';
        protected $identifier = 'pr_upate';
        protected $unique_prefix = 'prud';
        protected $plugin_basename = 'price-update/price-update.php';
        protected $opt = array();
        /**
         * __construct()
         *
         * Class default constructor
         */
        function __construct()
        {
                //We set the plugin basename here, could manually set it, but this is for demonstration purposes
                $this-&gt;plugin_basename = plugin_basename(__FILE__);
                register_deactivation_hook(__FILE__, array($this, 'deactivate'));
                add_action($this-&gt;unique_prefix . '_cron_hook', array($this,'cron_handle'));
                //Register some of our custom taxonomies
                add_action('init', array($this, 'wp_init'), 0);
                add_action('wp_footer', array($this, 'footer'));
                //We're going to make sure we load the parent's constructor
                parent::__construct();
        }


However, its defined above: 

        protected $plugin_basename = 'price-update/price-update.php';


any ideas?
