Please do not double post the same question in multible threads !!
Files appearing with a lot of hosts (i.e. 20 and more) are most likely faked files you won't be able to download. Stay away from them.
You should check the files using the Bitzi function before you download them:
How to use Bitzi
As for the problem of your son, updating LW to the newest version will get rid of this problem of being redirected. You can download the newest client here:
http://www.limewire.com/ 