[sariman]

спасибо, разобрался, нашел ошибку в своем коде кому нужно, вот:

Код:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, bass, StdCtrls, ComCtrls, sDialogs, sListBox;

type
  TForm1 = class(TForm)
    btn1: TButton;
    btn2: TButton;
    ListBox: TsListBox;
    sOpenDialog1: TsOpenDialog;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure btn1Click(Sender: TObject);
    procedure ListBoxDblClick(Sender: TObject);
  private
    { Private declarations }
  public
    procedure PlayStream;
    procedure Play;
    procedure FreeStream(var Stream: HStream);
    function  LoadStream(FileName : String) : Boolean;
  end;

var
  Form1         : TForm1;
  Channel,
  Channel2      : HSTREAM;
  Volume,
  FadeTimer     : Integer;
  PlaySync      : HSYNC;
  Dir           : String;
  Timer		: DWORD;

implementation

{$R *.dfm}

procedure PlayStreamSync(handle: HSYNC; Stream, data: DWORD; user: Pointer); stdcall;
begin
BASS_ChannelRemoveSync(Stream,Handle);
Channel:=Channel2;
Channel2:=0;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  if BASS_Init(-1, 44100, 0, Handle, NIL) = False then
    ShowMessage('Îøèáêà');
  GetDir(0, Dir);
  Channel:=0;
  FadeTimer:=3000;
  Volume:=100;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  BASS_Free;
end;

procedure TForm1.FreeStream(var Stream: HStream);
begin
  BASS_ChannelStop(Stream);
  BASS_StreamFree(Stream);
end;

procedure TForm1.PlayStream;
begin
if Channel2=0 then Exit;
  if Channel=0 then begin
    Channel:=Channel2;
    Play;
  end else
  if BASS_ChannelIsActive(Channel)=Bass_Active_Stopped then begin
  FreeStream(Channel);
  Channel:=Channel2;
  Play;
  end else begin
  BASS_ChannelSlideAttribute(Channel,BASS_ATTRIB_VOL,0,FadeTimer);
  BASS_ChannelSetAttribute(Channel2,BASS_ATTRIB_VOL,0);
  BASS_ChannelPlay(Channel2,False);
  end;
PlaySync:=BASS_ChannelSetSync(Channel2,BASS_SYNC_SLIDE,0,@PlayStreamSync,nil);
BASS_ChannelSlideAttribute(Channel2,BASS_ATTRIB_VOL,Volume / 100,FadeTimer)
end;

procedure TForm1.Play; //ôóíêöèÿ  âîñïðîèçâåäåíèÿ êàíàëà äàâíî çàãðóæåííîãî â ïàìÿòü
begin
BASS_ChannelSetAttribute(Channel,BASS_ATTRIB_VOL,0);
BASS_ChannelPlay(Channel,False);
BASS_ChannelSlideAttribute(Channel,BASS_ATTRIB_VOL,Volume / 100,FadeTimer);
end;

function TForm1.LoadStream(FileName : String) : Boolean;
var
  Time : DWORD;
begin
if Channel2<>0 then Channel2:=0;
Channel2:=Bass_StreamCreateFile(False,PChar(FileName),0,0,0);
end;

procedure TForm1.btn1Click(Sender: TObject);
begin
if sOpenDialog1.Execute then
ListBox.Items.Append(sOpenDialog1.FileName);
end;

procedure TForm1.ListBoxDblClick(Sender: TObject);
var ST:string;
begin
St := ListBox.Items[ListBox.ItemIndex];
if LoadStream(St) then
PlayStream;
end;

end.

Ошибку нашел вот здесь:

Код:

procedure PlayStreamSync(handle: HSYNC; Stream, data: DWORD; user: Pointer); stdcall;
begin
BASS_ChannelRemoveSync(Stream,Handle);
Channel:=Channel2;
Channel2:=0;
// все из-за этой строчки, я ее просто убрал, и все нормально работает
BASS_StreamFree(Channel);
end;