Complex sentence: Rob became the new voice of "Prince Eric" of Disney's' since Christopher Daniel Barnes failed to reprise the role in 2000, though Barnes did return to voice the character in the "Kingdom Hearts" series when Paulsen was unavailable.
Split into simpler sentences: Rob became the new voice of "Prince Eric" of Disney's' since Christopher Daniel Barnes failed to reprise the role in 2000. Though Barnes did return to voice the character in the "Kingdom Hearts" series when Paulsen was unavailable.