I tried a certain site Duedel pointed out and found a great engine start up sound for Bf-109s

It says it's a DB605A engine start up sound.. and having found out it's already in a .wav format, I tried it out in AH. It works very good, and sounds exceptionally nice...!! except there are few extra seconds which should be cut off from its rear end, since the prop chugging sound drags a bit too long and is overlapped with the main engine sound itself.
I was wondering if anybody who know these stuff in sound editing can cut the rear few seconds off the sound file so the overall length matches AH's standard engstart.wav length.

And I'm also curious, would the startup sounds of other variants that use the DB601 be simular to the DB605 sound(the engine on variants G and K)? Would a AS(assymetric) DB605 start up sound be different from a normal DB605 sound?
Anyway, here's the link
DB605A Startup sound Oh, and if anyone can recommend a good software for sound editing that I can get from the internet, one that has just good minimal few functions and not too complicated(pitch control, length clipping.. etc...).. please say so
