function create($station, $track = '')
 {
     global $user;
     $prg = new sotf_Programme();
     $prg->set('station', $station);
     $id = new sotf_Id($station, NULL, $track);
     $id->track = sotf_Programme::getNextTrackId($station, $id->date, $track);
     $prg->set('entry_date', $id->date);
     $prg->set('owner', $user->name);
     while (1) {
         $prg->set('track', $id->track);
         $prg->id = $id->toString();
         if ($prg->save()) {
             // this will also create the required directories via setMetadataFile !!
             debug("created new programme", $prg->id);
             return $prg;
         }
         $id->track = sotf_Programme::getNextTrackId($station, $id->date, $id->track);
     }
 }