Hello Dima,
[runtime -> bsd_audio_drv] Error: LD: jump slot relocation failed for symbol: 'Genode::Timeout::Timeout(Timer::Connection&)' [runtime -> bsd_audio_drv] Error: deadlock ahead, mutex=0x161a40, return ip=0xebbb0
Yeah about that… I completely missed the fact that old WIP branch I updated the package from contains an ABI breakage, which probably renders the binaries unusable on vanilla 20.08.
Sorry for wasting your time in that regard. I think at this point it is easier if you try to build the archives on your own (using 20.11 as basis) or wait for the next Sculpt release.
For adjusting volume levels let me point you to Alex' [1] Genodians post.
Regards Josef