Playing itunes videos on laptop??

[jus_tin]

Hi, ive downloaded a few videos from itunes on my ipod touch, copied them onto laptop but cant find anything to play them in other than quicktime - which is ok but cant get it to fill the screen (wanna hook-up laptop to tv). the file format is m4v and ive downloaded a few m4v players but none of them can actually play the video. someone did say that videos from itunes are protected so finding something to play them on is difficult. has anyone managed to play a video but not in quicktime which is quite laggy on my laptop (its an old laptop)!!!