To use Jamulus OS v1, you need a computer with a sound card and a wired access to the internet.
Steps to follow :
Download an iso file (see Files section)
https://sourceforge.net/projects/jamulus-os/files/JamulusOS/v1/
Download Rufus on windows (or mkusb on Linux) https://rufus.ie/ .
Open Rufus, drag and drop the iso image to Rufus windows, select the USB drive/stick you
want to overwrite with Jamulus OS, add persistence with the persistence slider, click on
the start button and wait for the write process to complete.
Reboot your computer and select your usb drive/stick in the boot options menu. The computer boots
on the USB drive/stick. (Select "Try Jamulus OS without installation" in the grub menu)
Connect your hardware (Network and sound card(s))
Right click (Execute) on the "Hardware settings (For Jamulus)" icons or search it in the
application menu. A program will probe your hardware (Network and sound card(s) ) and state
if it can be used with Jamulus software to jam online. This can take several
minutes ... It will display a report for network and audio in firefox at the end of the process.
If the hardware check was successfull, choose a sound card and report the proposed
settings ("Sample rate", "frames", "interface" card name) to Qjackctl or
ubuntustudio controls. (Icons on dekstop).
Right click (execute) on "Jamulus" icon and then click connect. Select a server and you're done !
You will have to tweak the Jamulus settings (Jitter buffers, audio quality and number of audio channels).