C:\Program Files\InnoTek VirtualBox>vboxmanage modifyvm VirtualBox Command Line Management Interface Version 1.3.8 (C) 2005-2007 InnoTek Systemberatung GmbH All rights reserved. Usage: VBoxManage modifyvm [-name ] [-ostype ] [-memory ] [-vram ] [-acpi on|off] [-ioapic on|off] [-hwvirtex on|off|default] [-bioslogofadein on|off] [-bioslogofadeout on|off] [-bioslogodisplaytime ] [-bioslogoimagepath ] [-biosbootmenu [-boot<1-4> none|floppy|dvd|disk|net>] [-hd none||] [-dvd none|||host:] [-dvdpassthrough on|off] [-floppy disabled|empty|| |host:] [-nic<1-N> none|null|nat|hostif|intnet] [-nictype<1-N> Am79C970A|Am79C973] [-cableconnected<1-N> on|off] [-nictrace<1-N> on|off] [-nictracefile<1-N> ] [-hostifdev<1-N> none|] [-intnet<1-N> network] [-macaddress<1-N> auto| [-audio none|null|winmm|dsound] [-vrdp on|off] [-vrdpport default|] [-vrdpauthtype null|external|guest] [-usb on|off] [-snapshotfolder default|] Syntax error: Not enough parameters C:\Program Files\InnoTek VirtualBox>vboxmanage modifyvm WIN95F -audio none VirtualBox Command Line Management Interface Version 1.3.8 (C) 2005-2007 InnoTek Systemberatung GmbH All rights reserved. C:\Program Files\InnoTek VirtualBox>vboxmanage modifyvm WIN95F -audio winmm VirtualBox Command Line Management Interface Version 1.3.8 (C) 2005-2007 InnoTek Systemberatung GmbH All rights reserved. [!] FAILED calling audioAdapter->put_AudioDriver(WINMMAudioDriver) at line 3471! [!] Primary RC = E_FAIL (0x80004005) - Unspecified error [!] Full error info present: false, basic error info present: false C:\Program Files\InnoTek VirtualBox>vboxmanage modifyvm WIN95F -audio dsound VirtualBox Command Line Management Interface Version 1.3.8 (C) 2005-2007 InnoTek Systemberatung GmbH All rights reserved. C:\Program Files\InnoTek VirtualBox>vboxmanage modifyvm