Support for Audio module [patch]

I'll check this out and apply it as I can. Thanks so much for offering this- I'm really psyched to support more modules.

Ok, I checked this out and the only thing different that I'd suggest is why not put this in the audio module instead of putting core support for audio into xspf? Since the hook system is in place, it seems like that might be a better place for it- what do you think?

Here's the rough code:

/**
 * implemenation of hook_xspf_playlist_use
 * @param string $op
 * @param object $node
 * @param array $config
 */
function audio_xspf_playlist_use($op, $node, $config) {
  switch($op) {
    case 'define' :
        $define['audio--1'] = t('Use audio node file');
      return $define;
    break;

    case 'return':
      if ($config == 1) {
        if ($item = xspf_playlist_create_file_item($node, xspf_playlist_url($node->audio_file->filepath))) {
          $items[] =  $item;
          return $items;
        }
      }
   break;
  }
}

Given your comments about development on the 5 branch, I'll just make a module inside of XSPF for this. It is now in CVS and will be released with the next release. Thanks for suggesting this!