Not really a travel related question, but I figure someone here will know the answer...I have some Blu-ray rips of DVDs that I'd like to play on my Ubuntu box. It's an old box with 512 MB RAM and a Pentium 4 2GHz CPU.

When I play these Blu-ray files, the video is all choppy and freezes for extended periods. Would getting a better video card solve my problem, or do I need a new computer/CPU? What video card would you recommend that works well under Ubuntu and ideally can output sound via HDMI?

Thanks!