Hello everyone,
some news : I can play mp3 and SD videos.
I customised the system in order to have gstreamer-1.0 with imx-vpu plug ins (thanks to cubox-i community).
I put 3 files :
the .deb file for the gstreamer vpus imx
the commands_history : I do this commands in order to have a working system for myself; feel free to adapt
the etc_nwies.tar.gz : I modified this files by hand.
BR
nwies