There are only two ways to see how much time has progressed in a currently playing video: pause/play, which interupts playback, and lock/unlock, which is just stupid. If you ask me, I think the lock/unlock work-around is simply a work-around by chance. Granted, it's better than pause/play since it doesn't interupt what you're watching, but it's not obvious. The reason I think it works by chance is because locking and unlocking adds/removes a lock icon that is only displayed next to the play time. So, when you lock/unlock, the icon is displayed, which coincidentally shows the playback timeline. What I'm thinking about is a simple play time on the informational screen displayed when you press the Enter button (I guess that's what you'd call the main button).