Hello!
I haven't acutally d/led any episodes before because my computer doesn't have enough space in it, but my brother once told me that you can get episodes off of the
Bit Torrent site .
All four seasons is about 17GB, and you need to d/l half a season at a time, I believe. There are other sites where you could get'em episode by episode, but I don't know any of those.
Hope this helps!
Mirage
