AVI files with DV AVI codec are not supported. Nor are most of the MOV codecs. For AVI only Xvid, AVC, MPEG1/2/4 codecs are supported.
WD may, at one point, in a very distant future, add the support for these popular codecs.
Considering their response time and reaction speed, this is something next generations may enjoy.
I will consider this issue closed, since I’ve discovered other “inconveniencis” other users complained about: audio-video desynchronization for MKV, download freezing, etc.
We’ll deal with these as they come (I can feel already MKV issues)