Hi Answer your first question: To remove noise, do the folowing step 1. select the part just contain the noise. It usually at the begin or end of file 2. Menu effect ->noise removal. 3. A dialog appears, press Alt+g to activate the get noise profile button. 4. select whole track you want to remove, then activate noise removal again. 5. When its dialog appears, find and activate the OK button. tips 1. After getting noise profile, you can select whole track you want to remove noise, then press ctrl+r to remove noise imediately. However, I've never compared this with the method above. 2. When record, put about 10 seconds at the begin or end of track to easily remove noise. Download this file and try http://www.askdavetaylor.com/0-blog-audio/goofy-spot-take1.mp3 HTH Cuong. ----- Original Message ----- From: Louise May Fami To: audacity4blind@xxxxxxxxxxxxx Sent: Tuesday, February 05, 2013 5:52 AM Subject: [audacity4blind] Questions Good day, I want to know how to do the noice removal in a proper way. I tried to do it but after I did it I can't hear anything anymore. I also want to know if it is possible to record and play a track at the same time with audacity?? Thanks in advance May ________________ Dang Manh Cuong HCMC University of Pedagogy: The Educational Psychology 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