Following up to my last message, I believe the problem was that RAT cannot handle this newer ATI integrated device. The system audio mixer showed the primary device as "ATI IXP" whereas RAT just showed "OSS: RealTek". Has anybody tried using this ATI sound device with RAT? -- Jeremy Mann [email protected] University of Texas Health Science Center Bioinformatics Core Facility http://www.bioinformatics.uthscsa.edu Phone: (210) 567-2672