Has anyone got this to work.,.,

i encoded tarzan in two languages.,.,..i used tmpgenc to multiplex two audiofiles (same bitrate etc) ..,.

Then when i play the burned svcd the only language i get is english.,,.and i can switch to the following when i press the audiobutton
1 Stereo
1 L
1 R
then
2 Stereo
2 L
2 R

The 1 stereo is the english language but the 2 Stereo is all quiet.,., have i done anything wrong or doesn´t the pioneer dv 525 support multi channel audio svcds?