Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
In order for a song to show up in your ipod music library, it has to be entered into the iTunes database, which iFile cannot do. So no, you can't use iFile to move downloaded music into ipod library.
 
If u have windows

if you have windows then get mgtek dopisp. search it. it allows you to sync your ipod with windows media player:)
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.