KODI switches now and then from USB soundcard to HDMI Audio out.

Hi, first time poster, very limited knowledge of Linux.

While playing music through KODI my audio output sometimes switches shortly (for 1 second) from my USB soundcard to the HDMI audio output (touchscreen with build in speaker).

Very annoying.

Can I disable the HDMI audio drivers?

Thanks in advance for any help, sorry for my lack of knowledge.

What info could I produce to make my problem clear to somebody with knowledge of linux?