private void ParseProtocolData(ValueSet playbackData, out Feed feed, out Episode feedItem, out TimeSpan timespan)
{
var values = playbackData.GetValueSet("feed");
feed = Feed.BuildFeedFromValueSet(values);
values = playbackData.GetValueSet("feeditem");
feedItem = Episode.BuildFromValueSet(values);
timespan = playbackData.GetTimeSpan("ElapsedTime");
}