Yup, not surprised at all. I had quite a strong debate with a guy about this once. He wanted me to do some mixing for him and wanted to send me the files in MP3 format. Regards, Phil Muir P J Muir Productions Music and audio production URL: www.philmuir.com/ ----- Original Message ----- From: Sean A. Cummins To: ddots-l@xxxxxxxxxxxxx Sent: Monday, July 24, 2006 7:02 PM Subject: [ddots-l] Re: making mp3s Hay Phil, Herman and I just found out today that MP3 files also can lose the timing alignment in Sonar as well. Once we inserted the .WAV files instead of the MP3, all the timing issues ceased. Sean