I saw this episode about a week or so ago on that Disney Junior website that Leor posted. Thanks for the link! I hope they keep putting future episodes on their website.
To be honest, I could tell right away that Mufasa's voice sounded a bit funny... So I checked the credits at the end, and yep, it was not James Earl Jones. Gary's voice is pretty close, but you can tell it's different... So many articles online kept mentioning how James Earl Jones and Ernie Sabella were returning from the original film to voice act in The Lion Guard. So did they just mean the Pilot Episode? Or is James going to voice act in some episodes in the future? Plus I kind of hope that Mufasa doesn't appear in every episode. Seems kind of silly that Mufasa keeps popping out of the clouds for every little problem Kion has. Almost makes the scenes not seem so epic and special.
Besides that I thought it was a nice episode. Looking forward to seeing future episodes.