Play_Command="mplayer -fs -slave -quiet " + Clipname; System.out.println("Playcommand: " + Play_Command); try { Process mediaplayer_process; mediaplayer_process = Runtime.getRuntime().exec( Play_Command ); System.out.println("executed"); //BufferedReader in = new BufferedReader(new InputStreamReader( mediaplayer_process.getInputStream() )); //out_to_mediaplayer = new OutputStreamWriter(mediaplayer_process.getOutputStream()); mediaplayer_process.waitFor(); mediaplayer_process.destroy(); } catch(Exception e) { System.out.println(e.getMessage()); }