Pre v1.8 needs seperate player.
You could d'load a player listed in the FAQ Section 4.4
LimeWire Troubleshooting FAQ
If you have v1.8 - I'm afraid I don't have this version and I'm not up to speed on the workings of the integral player.
If the later is the case, come back on and I'll see if I can find someone who has this version and can help.