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var
  mixer: Integer = 0;
  encoder: HENCODE;
  stream: INteger;

procedure TForm1.FormCreate(Sender: TObject);
begin
[...]
     BASS_Init(1,44100,0,Application.Handle,0);
[...]
end;

procedure TForm1.Start;
begin
stream:=BASS_StreamCreateFile(false,PChar(ExtractFilePath(ParamStr(0))+'sound2.mp3'),0,0,BASS_STREAM_DECODE or BASS_UNICODE);
mixer:=BASS_Mixer_StreamCreate(44100, 2, BASS_SAMPLE_FLOAT);
ok := BASS_Mixer_StreamAddChannel(mixer, stream, BASS_SAMPLE_FLOAT);
if not ok then
showmessage(inttostr(BASS_ErrorGetCode())); // Gibt keine Fehlermeldung aus!

BASS_ChannelSetAttribute(mixer, BASS_ATTRIB_VOL, 0); // Stream im Client muten
[...]

Command := 'lame -r -x -s 44100 -b '+PChar(inttostr(Bitrate))+' -';
Encoder := BASS_Encode_Start(mixer, PChar(Command), BASS_ENCODE_NOHEAD or BASS_ENCODE_AUTOFREE, nil, 0); 

  if not BASS_Encode_CastInit(Encoder, PAnsiChar(AnsiString(ed_server.text)),
  PAnsiChar(AnsiString(ed_Password.text)), content,
    PAnsiChar(AnsiString(ed_Name.text)), PAnsiChar(AnsiString(ed_url.text)), PAnsiChar(AnsiString(ed_Genre.text)),
     PAnsiChar(AnsiString(ed_desc.Text)), nil,
    bitrate, chk_Public.Checked) then
  begin
    BassError('Couldn''t setup connection with server');
    BASS_ChannelStop(mixer);
    mixer := 0;
    exit;
  end;
  btn_Start.Caption := 'Stop';
  BASS_ChannelPlay(mixer, FALSE); // resume recording
  ed_server.Enabled := false;
  ed_password.Enabled := false;
  ed_Name.Enabled := false;
  ed_genre.Enabled := false;
  ed_url.Enabled := false;
  ed_desc.Enabled := false;
  chk_public.Enabled := false;
  chk_MP3.Enabled := false;
  chk_OGG.Enabled := false;
  cb_Bitrate.Enabled := false;
  ed_TrackTitle.Enabled := true;
  ed_Tracktitle.Color := clwhite;
  LevelTimer.Enabled := true;
  BASS_Encode_SetNotify(encoder, @EncoderNotify, @Win); // notify of dead encoder/connection