Exporting with a .xpf instrument

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Hello,

I've recently tried to export a song, containing a .xpf instrument.
When I listen to the track I exported all I hear is some sort of short tap instead of the instrument.
Is there a way to solve this problem?
what OS
what lmms
what instrument?
what export settings? ..default??? try default
buffer??
sound-devise???
what export format

And it replayes perfect when you just play it??
*.xpf are zynAddSubFx (zyn) presets. zyn works perfect in lmms, but where did you get the preset from, did you make it your self, or get it from the net? -Could be that the file is made on a newer version of zyn, than the one in current lmms..??

Have you tried to export the same song with a different instrument, as test -try 3oc
does it work?
Thanks for the reply, but apparently exporting to .ogg does work...
Still thanks, though!