You can download the demo version from the VOSGAMES website at:

This demo version allows you to test Boom Recorder for 30 days
without limitations. After the trial period Boom Recorder will
work in degraded mode, where you will only be allowed to record
a single channel without metadata nor timecode.

To use Boom Recorder after the 30 day trial period you will need
to buy a license. You can buy a license from VOSGAMES at:

Anyone, including download websites and magazines, may
redistribute the unmodified disk-image. You may also
use the screenshots and logos found in the press
section of the VOSGAMES website in reference to the
Boom Recorder product.

You are NOT allowed to redistribute a license code of
Boom Recorder.

Warranty and liability
This software is provided by VOSGAMES "as is" and any expressed or
implied warranties, including, but not limited to, the implied warranties
of merchantability and fitness for a particular purpose are disclaimed.
In no event shall VOSGAMES be held liable for any direct, indirect,
incidental, special, exemplary, or consequential damages (including,
but not limited to, procurement of substitute goods or services;
loss of use, data, or profits; or business interruption) however caused
and on any theory of liability, whether in contract, strict liability,
or tort (including negligence or otherwise) arising in any way out of
the use of this software, even if advised of the possibility of such damage.