Hi. I am looking for an app that can trim the start and end of audio files. Hokusai is good for short files, but I have some long audio files to trim and because Hokusai converts files to .wav before editing them, the long files are too big and make even my iPod 5 which is the newest device and the device with the most ram that I have crash. Is there any accessible apps that trim files in there original format? I tried to trim a 30 minute file in hokusai and it ended up being 400 mb and made my device crash. In its original format it was only about 20 mb. Thank you.