Hi gales The reason of my problem is a long part of silence at the end of some track. I used truncate silence to reduce. However, I don't know why doesn't it exist. Thanks for answering. ----- Original Message ----- From: Gale Andrews To: audacity4blind@xxxxxxxxxxxxx Sent: Monday, September 10, 2012 12:32 AM Subject: [audacity4blind] Re: my project file too large CTRL + A to Select All then CTRL + F6 into Selection Toolbar, TAB into End or Length to hear if the project is the expected length. Every time you do an edit it doubles the disk space used: http://manual.audacityteam.org/man/Audacity_Projects#Disk_space_usage . Gale | From "Dang Manh Cuong" <dangmanhcuong@xxxxxxxxx> | Sun, 9 Sep 2012 22:25:52 +0700 | Subject: [audacity4blind] my project file too large > 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. The audacity4blind web site is at //www.freelists.org/webpage/audacity4blind Subscribe and unsubscribe information, message archives, Audacity keyboard commands, and more... To unsubscribe from audacity4blind, send an email to audacity4blind-request@xxxxxxxxxxxxx with subject line unsubscribe ________________ 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