download tool

hi i am trying to download youtube videos whose links are given on another website page now what i want instead of click links one by one and then downloading is there any method thru which i can download videos from that or any software tool etc which can generate links of those videos so...

i want to download videos from *www.youtube.com/playlist?list=ELdItIDCSNLAM&feature=plcp and from meritnation.com but unable to download them i have tried 1. IDM 2. keepvid 3. savetube 4. byTubed and lots of other techniques like gong into the page info and then...