I cannot mount .dmg file for VMWare Fusion: Protocol wrong type for socket ERROR

When a USB device is hot-plugged while VMware is running, I often see a dialog from the VM instance asking if the device should be attached to the VM or to the host OS. It's quite easy to miss this dialog if you have other applications running or if the VM is in a separate workspace. And until the dialog gets its answer, the device isn't attached to either OS.

If you're not seeing this dialog, it's also possible that VMware has already been configured with a default answer for the device in question. For example, it might automatically be attaching the device to the guest OS running in your VM. Note that this is not normally what you'd want with USB speakers, as VMware already emulates a virtual audio output device for use by guest OS's that funnels audio output through the host OS.

Have a look at your VM settings under "Virtual Machine > USB & Bluetooth Settings…" where you should see a dialog similar to the following:

I expect you should see an entry corresponding to your USB speakers. If so, you should be able to configure how they're handled when hot-plugged from there.

I don't think this is possible without some special software in the windows vm. The dmg is analogous to the windows .exe. In the same way a Mac can not run an .exe, a windows box can not open a dmg. That being said a software solution like transmac installed in the vm may offer the functionality you seek.

No personal experience with transmac myself.

http://www.acutesystems.com/scrtm.htm

Trasmac features:

-Open Mac format disk drives, flash drives, CD/DVD/Blu-ray media, high density diskettes, dmg and sparseimage files.

-Copy files to Mac disks and dmg images.

-Format for Mac and restore disks and flash drives.

-Create, compress and expand (convert to iso) dmg files.

-Built in burner functionality to burn ISO and dmg files directly to CD/DVD/Blu-Ray.

-Read Mac multisession and hybrid CDs.

Good luck.