http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspxWindows Server 2003 does not include drivers for the Sound Blaster 16 emulated by Virtual PC (nor is this card officially supported in Windows Server 2003). It is - however - possible to get sound working by loading the Windows XP drivers under Windowsen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspx#347478Thu, 06 Jan 2005 07:44:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:347478somestuffI have also found that you can get it working by using Windows Update. http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspx#347572Thu, 06 Jan 2005 12:01:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:347572David SmithI haven't tried it out yet, but I wonder if this is the same for Virtual Server 2005.http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspx#347979Thu, 06 Jan 2005 23:43:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:347979Virtual PC GuyHi David, <br> <br>No - this will not work under Virtual Server - as Virtual Server does not emulate a sound card at all. <br> <br>Cheers, <br>Benhttp://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspx#348980Sat, 08 Jan 2005 02:46:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:348980David SmithOh. Thanks. =)http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspx#360683Wed, 26 Jan 2005 09:11:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:360683HendrikHi Ben, <br> <br>I looked at my WinXP SP2 CD and couldn't find the ctlsb16.sys. <br>I have EXPANDed the wdma_ctl.inf though. <br>Can I know where can I find the ctlsb16.sys file? Is it in WinXP CD but not in the WinXP SP2 CD ? <br>Thanks.http://blogs.msdn.com/virtual_pc_guy/archive/2005/01/05/347358.aspx#367328Fri, 04 Feb 2005 21:31:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:367328YoichiThe inf files can be found in driver.cab: <br>*:\windows\system32\driver cache\Driver.cab