Here are all important links:
http://lmms.io/forum/viewtopic.php?f=1&t=4740
-A few rules and useful forum instructions
If you like to introduce yourself, to the community, go here:
http://lmms.io/forum/viewtopic.php?f=4&t=4480
I think you mean dxf-audio?
xdf is a spreadsheet
First you need to understand that using the samples in LMMS is ok, but it is not legal to redistribute them, not in whole or in excepts -At All!
That said
Conversion is possible:
Search google for "convert dxf-audio to mp3 online"