The first cooking (might be snow xvesa) ran asunder mp3 ok but gave an ogg error. I was afraid to run the tazpkg upgrade on that cooking so I tried an older slitaz installation (might not be snow) that was retired after the last failed attempt at slitaz dialup.
The second cooking ran asunder without the ogg error but gave an mp3 lame error. I did the forced tazpkg upgrade and installed lame. It gave the same lame error. I uninstalled and reinstalled asunder and then asunder did not show in the menu and asunder would not open at all (sh not found or something like that).