Solved.Need add option --audio-drv-list="alsa oss" to configure.

thanks. Did that and then needed to
export QEMU_AUDIO_DRV=alsa
before starting the virtual machine.

It solved my problem too, i can share my sound to both guest and host now, Thank you.

well finally solved it...

im a noob because i didn't know

export QEMU_AUDIO_DRV=alsa

is only applicable to the current terminal, i thought i was global... so dont use 2 terminals...
just copy paste that then use the SAME terminal lol
omg without sound for 2 weeks because im suche noob but because i believe there are many i leave the warning

also with my kernel and kvm version which i think are the latest

--audio-drv-list="alsa oss"

is no longer a option but i didnt needed it...

nameless noob!

well if i have sound in guest i dont have in host...

tested some more google pulse and
for example
declare -x QEMU_ALSA_ADC_DEV="/dev/audio"
declare -x QEMU_ALSA_DAC_DEV="/dev/audio"
declare -x QEMU_AUDIO_DRV="alsa"
declare -x QEMU_OSS_ADC_DEV="/dev/audioOSS"
declare -x QEMU_OSS_DAC_DEV="/dev/audioOSS"

it still say

oss: Could not initialize DAC
oss: Failed to open `/dev/dsp'
oss: Reason: Device or resource busy
oss: Could not initialize DAC
oss: Failed to open `/dev/dsp'
oss: Reason: Device or resource busy
audio: Failed to create voice `es1370.dac2'

not fatal problem but if i caould go over it would be perfect lol, then i would have only to find a way to make my G9 mouse forward and back buttons to work, i try lsusb and host:1234:1234 stuff, worked for other devices but not my logitech logicool products lol

I'm kind of a newb when it comes to KVM. Can you clarify what configuration needs to be modified? The client or the KVM configuration?

Thanks