I accidently clicked
 

it was my first time on limewire and i cliked a song to download.. then a popup came up sayin gsomething along the lines of ' this download is not supported by limewire would you like to download anyway? and then i didnt want to download the song i had just clicked on .. so then i pressed dont ask me again.. so now i cannot download any songs that is from limewire.
long story short.. when i first went to download the song, it asked me if i would still like to download the song even though it is not supported by limewire and i pressed no for the answer and i clicked dont ask me again, so now i cannot download any songs on limewire. Help would be appreciated thanks

Go to LW's menu bar, Tools -> Options -> View -> Popups & tick Revert to default. :)

For licensing, see License requirement (click on link)