Do you want to use HDMI output instead of the DAC? If you want to use both, add MultiSqueeze for another Squeezelite player.
Please check the your Squeezelite’s sound card option. There should be several options with bcm2835 and HDMI in the title, any of those should get you output from HDMI. Also, make sure your build in audio is not deactivated in the Raspberry Settings.