Thanks for your helpful suggestions. I have InnoTek's JVM version 1.4.2 (build 1.4.2_01-b06) installed, which I downloaded about two weeks ago. Based on my experience with LimeWire, it doesn't seem particularly stable; morever, it corrupts the video regularly, requiring a reboot.

I have just filled in an application form at the GoldenCode website and hopefully I can try its version within a day or two.