Although the source code provided here is up to date, this repository has been mirrored at GitHub, which is the official and recommended repository now.
There will be a release for every Ubuntu version and the version number will be the same as the one found in the kernel for that Ubuntu version.
Besides this, there will be a tag in the repository and, possibly, a binary module will be available for download that will be binary compatible.
EMU disks could be read by this driver only if the disk drive itself supports 512B block size. This is possible on SCSI drives and IDE hard drives but not on ATAPI CDROMs.
However, there is still a chance to access the content of a CDROM through a "normal" drive by mounting it as a loop device and then mounting this loop device as an emu3 filesystem type disk.
Notice that this is not a fault in the module but a limitation of the ATAPI CDROMS.
Basically, you need the gcc, autotools and the kernel headers.
Download the source by executing
git clone git://git.code.sf.net/p/emu3fstools/code dir
Then, run
cd dir make
Simply, run
sudo make install
After this, you will be able to insert the module by running
sudo modprobe emu3_fs
At this point you will have to mount the drive under the directory of your choice.