Zune 120 security?

Just got the Zune 120 for Christmas. Seems pretty good so far, but one problem is that i can't get some of my videos on it. ive converted them so that the zune media player recognizes and plays them, and they're in my collection.
when i plug my zune in and try to sync (automatically or manually) my videos onto it, it flashes the syncing icon, and shows some %completed numbers. when i unplug the zune, it says that the sync is complete, but the videos aren't on the player. they're just not there

the microsoft sample videos that come with all PCs import and play on the zune, so i know the sync process works. i know that the converter I'm using works since i downloaded a random youtube vid and converted and put it on the player. I've heard that the zune has security software that prevents it from playing pirated videos, is this true? I mean, theoretically, if I downloaded vids from torrents, would I theoretically not be able to play them on my zune?

any help appreciated.

i've made plenty of vids for a zune 30 and never had any compliant ones not sync. from a lot of different sources. i would guess the videos aren't in a folder the zune software is trying to sync? or not in the proper format, try the free zune converter and use h264 .mp4
http://www.brothersoft.com/free-zune-video-converter-77931.html

or use wmv9 type video.