Data to label form - repost

I need something made which will allow me to quickly enter the roster of a sports team into a template where I can add a team logo etc. Then the info/data I enter needs to go into a format that I can save as a pdf and print onto Avery or other brand 2"x4" labels. Here is a service online that does exactly what I want, but I have 100 teams in our league to do so we can't use this services at $20 each!! We need to do new lables often, so I would like a system made that I can use over and over. Please see the link for more of a description of what I need. [login to view URL]