Hi,
I think (not with Elive right now) you should have a rc file for xine maybe simply at /home/you/.xinerc or maybe /home/you/.xine/...
Just try to delete that(ese) file(s) and start xine again...
About dependencies, look in apt (trough synaptic for example) for keyword mkv you should find libmkv0 or mkvtoolnix, they should help...
Hope it helps...
MerMouY
Some of my websites:
Communautary website idea: [
teams.elivecd.org]
Personnal website: [
perso.youm.org]
Rwanda, french community: [
rwandaises.fr]
YouM's streeshow: [
youm.org]