This is an updated Itunes Derpy voice rip. You should totally buy the series, but if you want a remix version, this is it:

This is the original controversial release with RD using Derpy's name, the eye animation isn't messed with, but with the updated non-retarded voice they used originally. Best of both!

The other torrent out there (not 2014 version) replaced Derpy's voice on everything, but forgot the part during Applejack's speech.