Needs some help setting up a linkshare itunes app feed

Hey guys. I am fairly new to wordpress and I am trying to setup an itunes app store rss feed on my site. I am a linkshare affiliate and get the feed but have no clue how to get it to display. I have tried feedwordpress and get an error that it is an invalid feed. Sorry if this is a dumb question, but I just do not know how to set it up. Any help would be greatly appreciated.