YEEAAHHH!! I finnaly got it to work! I combined all the advices here on the thread and joy joy
I downloaded everything again and edited default.conf with leafpad (not notepad as previous). Put the video in /opt/media/ (created media folder)
And ln -s /opt/media/video.avi video.avi and ta-da!
Can't say what made the difference... but it's all good! Thanks guys!