I think I've got python because I can run superkaramba. I didn't bother checking. I think the problem is that it's missing some program that's key to the whole process. However, I did find a great bash script online that seems to work.
For the flac to ogg, I didn't need the script - when I dug into the oggenc manfile some more I saw that the tags were automatically transfered over when converted from flac. This makes sense since they are both developed by the same org (xiph) and they both use the same structure (a kind of xml, if I understand correctly)
For the flac to mp3, the bash script showed me that I do indeed need to convert to wave and then do some extra stuff to add the tags in.