Yes you will want to check that box as that will mix everything down through the 64 bit engine. Regards, Phil Muir Accessibility Training Telephone: US (615) 713-2021 UK+44-1747-821-794 Mobile: UK +44-7968-136-246 E-mail: info@xxxxxxxxxxxxxxxxxxxxxxxxxxx URL: www.accessibilitytraining.co.uk/ ----- Original Message ----- From: Stacy Blackwell To: ddots-l@xxxxxxxxxxxxx Sent: Thursday, September 17, 2009 7:09 PM Subject: [ddots-l] 64 bit engine during export? Hello, all. I've been meaning to ask this question: when exporting, right after the "fast bounce" checkbox, there is a checkbox for the 64 bit engine. Does this need to be checked when exporting to MP3 or WAV? Thanks. SLB ------------------------------------------------------------------------------ Bing brings you health info from trusted sources. Try it now!