+1
There have been many instances where I'll decide to watch a recording programme 'live' and surf to another channel in the advert breaks, then return to the channel after a few minutes.
I previously used WMC, and its LiveTV is just that "Live TV" and I would really appreciate this functionality in JRiver.
In WMC, if I wanted to watch a recording from the beginning while it is being recorded, I would go in 'TV Recordings' and start watching from there. I believe this methodology would also work well for JRiver.