Virtual Speaker 1.2.1

This KEXT (kernel extension) for MacOS 10.2 and 10.3 fixes problems with the handling of sound on the Apple G4 Cube when the external USB speakers are not connected (since the Cube does not have a built in sound device). The extension runs under MacOS 10.2.x and later, and will create a virtual output audio engine which is selected by default in the sound control panel when no other audio device is detected. This extension will run on any model of hardware, and may prove useful for any model without a built in sound device.

This kernel extension should fix a number of issues caused by the lack of a sound output device which have been noted in iMovie, DVD Studio Pro, and other applications (including video capture errors, crashes when previewing DVD projects, automatic quit when launching some games and applications which require an audio output device, and other random misfortunes).

For more information on the problems that VirtualSpeaker is designed to fix, please read:
TechNote #001 (Confirmed issues in MacOS X applications caused by the lack of an audio output device).

Download VirtualSpeaker

This software is available for download through the Info-Mac Archive.
If any of the following links are not working, then that mirror may not have been updated yet with the most recent info-mac contents. Please try a different link, or check back a bit later.

• MIT HyperArchive mirror of Info-Mac: virtual-speaker-121.hqx
• Apple's mirror of Info-Mac: virtual-speaker-121.hqx
  

If you are outside the US, you might want to go to the Info-Mac Mirror List and download from a closer Info-Mac mirror site. The file should be located in the /cfg/ folder and named "virtual-speaker-121.hqx".

Version History:

VirtualSpeaker 1.2.1 (released 2003-07-18)

• Corrected issue with VirtualSpeaker that was preventing the fix from working for games (and applications) using the Carbon SoundManager (the fIsMixable bit was set incorrectly for the 16 bit virtual audio format).
  
• Fixed a permissions issue caused by a setting in the install package that was ignored by the Installer program.
  
  

VirtualSpeaker 1.2.0 (released 2003-07-12)

• compatible with MacOS 10.2.x and later
  
• Audio clipping code was simplified to remove dependency on external LibAudioFloat.a library.
  
• Extension renamed to VirtualSpeaker to clarify its purpose and avoid confusion with Pseudo utility program.
  
  

PseudoSpeaker 1.1 (internal version only)
PseudoSpeaker 1.0 (internal version only)