retropie no longer plays audio for lr-mame 2003 et al
works under daphne (and batocera) so not a hardware issue

i've spent hours reconfiguring various config files with 'help' from chatgpt.

ulimately it keeps telling me the same thing... check alsa, update retroarch settings - with variations on the below (dont focus on those)

driving me mad - one day it worked - next it didnt

as said - batocera works and I've done a bog standard install to see what's up
funnily enough it works, but it'll take me so long to get he system reconfigured to how it is now.

audio_enable = "true"
audio_driver = "alsa"
audio_device = "default"
audio_mute_enable = "false"
audio_mixer_mute_enable = "false"
audio_volume = "1.000000"
audio_latency = "32"
audio_resampler = "sinc"

PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
pi@retropie:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

Hardware : BCM2711
Revision : c03114
Serial : 1000000018c0a68b
Model : Raspberry Pi 4 Model B Rev 1.4
pi@retropie:~ $ cat /proc/meminfo
MemTotal: 3930868 kB
MemFree: 3507024 kB
MemAvailable: 3657904 kB
Buffers: 25588 kB
Cached: 267560 kB
SwapCached: 0 kB
Active: 116144 kB
Inactive: 206448 kB
Active(anon): 632 kB
Inactive(anon): 59820 kB
Active(file): 115512 kB
Inactive(file): 146628 kB
Unevictable: 21332 kB
Mlocked: 16 kB
HighTotal: 3264512 kB
HighFree: 2934792 kB
LowTotal: 666356 kB
LowFree: 572232 kB
SwapTotal: 102396 kB
SwapFree: 102396 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 50800 kB
Mapped: 68776 kB
Shmem: 31008 kB
KReclaimable: 15784 kB
Slab: 32572 kB
SReclaimable: 15784 kB
SUnreclaim: 16788 kB
KernelStack: 1128 kB
PageTables: 2244 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 2067828 kB
Committed_AS: 184420 kB
VmallocTotal: 245760 kB
VmallocUsed: 5224 kB
VmallocChunk: 0 kB
Percpu: 528 kB
CmaTotal: 327680 kB
CmaFree: 291920 kB