For $2.50 at ChessCube, you can purchase a video by FM Dennis Monokroussos on the Philidor Counter Gambit. I downloaded it today.Monokroussos recommends the line 1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Neg5, avoiding the "timid" 6.Ng3 and the "rash" 6.Nxe5.