I use game_save("start",0,SV_ALL) for save my level state. When i use game_load, previously background sound(snd_loop) still playing. When i play my level 5 times i have 5 sounds in my speaker. How i can fix this?

stop the sound before loading???

NO.

snd_stopall(4);

before level loading like sper said or stop jour loop white snd_stop(soundhandle);

Uh... another idea:
how about snd_stop before level saving?

I understand you want it to keep playing the background music while loading a game, and just keep going with that music, not reload the last music.
(That's how I interpreted your "NO." Correct me if I'm wrong)

So your problem is that the current sound gets saved, but it shouldn't.
I searched the manual, and game_save does not say which part you need to deactivate in order to have it NOT save the sound.
I guess that leaves you with 3 options:
-stop the sound before saving, then it shouldn't load a sound when you call game_load. (not tested)
-stop the sound before loading, then it'll play the sound that it was playing when saving the game (not tested)
-try around with the game_save mode and see which one you need to deactivate if you DON'T want to save the sound. you could try a test level for that: loop a sound in main, then have a function that saves the game and one that loads it and use:
game_save("test",1,SV_ALL-SV_VARS);
Replace SV_VARS with the thing you don't wanna save.
i'd try SV_VARS, SV_SYS, SV_VIEWS, SV_FUNCTIONS and SV_LEVEL first.

No idea if this works. Hope it helps though.

yes.. but when he stops the sound on saving the game.. he has to start it again when he don´t want to quit the game ^^
So, let the sound run during saving.. and just stop before laoding..

How about this. If it doesnt make enough sense, post the whole function containing your "game_load".
NOTE: This code must be in a separate function to your game_save, or the var temp_handle at least must be after the game_save.
temp_handle MUST NOT exist at save_game time.

Thanks all for ideas.

use function to stop your sound.
ex:
var play;
SOUND* sample_sound="sample.wav";
function sound()
{
play=snd_play(sample_sound,100,0);
}

function sound_stop()
{
snd_stop(play);
}

function main()
{
screen_color.blue=250;
on_b=sound();
on_s=sound_stop();
wait(1);
}

or try var_nsave for the sound handle?