Limewire 5.1.2 crashes

[ibjman]

I'm new, this is my 1st post...go ahead & scold me if I'm not doing this correctly!
Limewire 5.1.2
Java 1.6.0_13
Windows XP Pro
Cable
Default Media Player is WMP 11.1.5721.5260

When I click preview for an incomplete video file from either the bottom of the screen or the show all pane, limewire crashes most times.
Then I have to open Limewire again.
My default media player is WMP 11, but I have VLC, Infranview, WMP classic, winamp etc. installed.
If you suggest that I change to VLC as the default player for Limewire, could you tell me how to do that? Thanks for any help you could lend..