The work has to be done manually, there is no way to cut the file automatically .
I am professional DJ and electronic music producer, having my own home studio:
Reason 4, Behringer 2030A, E-MU 0404, Sennheiser HD 555, Behringer Xenyx 802.
I am working on audio projects since 2003: audio editing, sound designing, music producing and DJ-ing, signed artist at 405 Recordings.