Sure, simply update your LW program. Unfortunately the recent OSX java update broke LW 5.1.2 & 5.1.3 .. an alternative is to get the LW beta which has some great improvements including a size filter & loads much much faster. But that's up to you.
Beta:
LimeWire 5.2.5 (Beta) - Lime Wire
Or regular LW download here:
Download LimeWire 5.1.4 - Lime Wire