You can download limewire software free from its official site:
http://www.limewire.comIf you want to download YouTube video to Zune, you can refer to this step by step guide:
http://www.aimersoft.com/tutorial/free-download-youtube-video.htmlNow you can follow four steps to import limewire video and music to Zune
Step1. Download free limewire video and music to computer
1. Download Limewire, it's totally free.
http://www.limewire.com/download/version.php2. Run the Limewire, Just type in some key words that you may be interested in, choose the type, and press search, then you can get a lot of files to download.

Select your needed file and click download to get it. You can also download multiple files in one time.
After you download the file, then right-click on the download file and choose "explore", then you can find your file. You can also Option, then you can set the default downloaded directory. Click tool folder for saving your file.


Step2. Add limewire free movie to Zune
Zune can play WMV and MP4 video. If your downloaded video didn't fit the requirement, you can use Aimersoft Zune Video Converter to convert it.
1. Download and install Aimersoft Zune Video Converter, you can free download the latest version from here:
http://www.aimersoft.com/zune-video-converter.html2. Run Aimersoft Zune Video Converter, click "Add" button to import your downloaded limewire video, then click "Start" to start the conversion, the default setting works perfect.
3. After conversion finished. Run Zune software, connect your Zune device to computer via USB cable, then the Zune software will detect your Zune player. Drag the converted video to Zune software and click "Start to sync", then your video will be transferred to Zune. If you don’t have Zune software, you can download it free from here:
http://www.zune.net
4.Rip your CD to Zune
The Zune software will not only manage and view your movies, songs, edit album and track information, but also supports ripping your audio CDs. Everyone has favorite CDs and of course wants to listen to it on his / her Zune. How to do it? Just rip your CD to WMA, MP3 or AAC file formats. After that transfer them to your Zune.
Note:You must aware that downloading music video from limewire is illegal