Thanks guys, looks like I will be downloading VLC, and give that a try.
I used Real Player quite some time ago, and through some problem or another took it off the compute. Thought that I would give it another try today, but had problems, which could be Real Player or the computer?.
Not sure what as just happened, but I used the link Fruit Bat provided, and commenced to download, when Avast warned me of a suspect file, and recommended that I used Avast sandbox. Did that and everything seemed to commence to instal okay, then the system crashed, rebooted and a report was given via Microsoft as to what might have been the 'blue screen' problem.
Checked in XP Add/Remove, and no indication of programme download?.
I will try the link provided by eedcam, and see what happens?.