Help with Regex

Hi,
I have youtubetomp3 site, www.YoutubeToMP3.me,
Now I have problem with videos that contain unusual chars, like

";,/

PHP:

etc.
Here is the 2 functions that Saved the name from youtube:

        function ExtractSongTrackName($vidSrc, $srcType)
        {
            $name = '';
            $vidSrcTypes = $this->GetVidSrcTypes();
            if (in_array($srcType, $vidSrcTypes))
            {
                $vidSrc = ($srcType == $vidSrcTypes[1]) ? file_get_contents($vidSrc) : $vidSrc;
                if ($vidSrc !== false && eregi('eow-title',$vidSrc))
                {
                    $name = end(explode('eow-title',$vidSrc));
                    $name = current(explode('">',$name));
                    $name = end(explode('title="',$name));
                }
            }
            return $name;
        }        

PHP:

       private function SetSongFileName($file_contents)
        {
            $vidSrcTypes = $this->GetVidSrcTypes();
            $trackName = $this->ExtractSongTrackName($file_contents, $vidSrcTypes[0]);
            return $this->_songFileName = (!empty($trackName)) ? self::_SONGFILEDIR . preg_replace('/_{2,}/','_',preg_replace('/ /','_',preg_replace('/^[A-Za-z0-9]+$/','',$trackName))) . '.mp3' : '';
        }

PHP:

Regards.

 

return $this->_songFileName = (!empty($trackName)) ? self::_SONGFILEDIR . preg_replace('/_{2,}/','_',preg_replace('/ /','_',preg_replace('/[^A-Za-z0-9 _]$/','',$trackName))) . '.mp3' : '';

PHP:

 

Still don't work.

Regards.

 

Oops, typo.

return $this->_songFileName = (!empty($trackName)) ? self::_SONGFILEDIR . preg_replace('/_{2,}/','_',preg_replace('/ /','_',preg_replace('/[^A-Za-z0-9 _]/','',$trackName))) . '.mp3' : '';

PHP:

If this doesn't work, then give more detail. Do you get an error? Do you get a result you didn't expect?

 

Now it's work with unusual chars, but with Hebrew language, don't work.
I need that it'll work both.

Regards.