A740GX HDD to DVD copy



Apologies if this is a stupid question, but im a total newbie to this and only got the unit a few days ago. Basically, ive recorded a show onto the HDD and copied it to a DVD+R. The thing is when i put it into a normal dvd player or computer, it shows as having two titles, both of which are the show that i put onto disc, though i only copied it once. Is this normal, and if not how do i stop it?