how to change background sound in every scene

hi,i use this code to play different background sound in each scene,
<krpano onstart="playsound(bg, backgroundmusic.mp3); loadscene(scene1,null,MERGE);">
<plugin name="soundinterface" url="soundinterface.swf" alturl="soundinterface.js" preload="true" />
<scene name="scene1">
<events name="scene1events" onxmlcomplete="playsound(scene1sound, scene1music.mp3);" onremovepano="stopsound(scene1sound);" />
</scene>
<scene name="scene2">
<events name="scene2events" onxmlcomplete="playsound(scene2sound, scene2music.mp3);" onremovepano="stopsound(scene2sound);" />
</scene>
</krpano>
but i need to build 3 button in 3 languages as background sound. when i click 1 button the language in all scene will turn to 1 language.
my idea is put 3 language in 3 folder, when 1 kind language onclick, all background sound url change.
is it posibble, how to do?

thanks a lot sage，it works fine.
i also have two language hotspot in the scene.
i want to make one onloaded action to check what' language was select for the hotspot.
how can i do?

Quote from Tuur

hi,

this is fairly simple to do.

so the button Dutch is clicked. Then set for example set(_lang, Dutch);

Code

<scene name="scene_1" title="scene1" audio="thekrpanosongpart1.mp3" onstart=""  >

and

Code

<events name="audio" keep="true" onnewscene="PlayAudio" />

and

Code

<action name="PlayAudio">
	set(_audio, calc:'audioplayer/audio/' + _lang + '/' + scene[get(xml.scene)].audio);
	if(scene[get(xml.scene)].audio,
		playsound(sound1,get(_audio));
	,
		stopsound(sound1);
	);	
</action>

something like that.

EDIT: sorry.. i forgot the language.. haha .. edited in..

Hope it helps!
Tuur

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hi Tuur, another problem i haven't found before.
i also use set(_lang,chinese) in the first scene onstart, if i don't the first scene will link none mp3.
when i go back to the first scene, the language will return to chinese.
i also use action set(_lang,chinese) in startup but it doesn't work.
how to set one kind language as default.