Hi listers I used d speech to generate two wave files, and import an mp3 file to make backround music. after adding silence, shift time using time shifter etc, my project have about 2 minute of lenght. but when I save it, the size it over 1gb. I don't know why, and how to reduce its size. I think I have something wrong. So let me give some details about my project 1. load the backround sound 2. Load the first narration sound and align it 3. apply reverb to narration sound 4. Duck the backround sound 5. delete the remaining audio after finishing the narration voice 6. Load the second narration sound and align all existed track to the end of it. 7. apply reverb. This makes my project over 1gb, and take alot time to export at wave or mp3 file. So anyone who know why and how to fix, please help me. Thanks so much ________________ Dang Manh Cuong HCMC University of Pedagogy: The Psychology and education Mobile: +84 902-572-300 E-mail: dangmanhcuong@xxxxxxxxx Yahoo! ID: manhcuong0312 Skype name: dangmanhcuong facebook: http://facebook.com/dangmanhcuong Blog: http://vi.netlog.com/Cuong_littlecat Website: http://ngoisaodanduong.com http://www.saomaicenter.org Projec-Website: http://dangmanhcuong.googlecode.com