Granted that it requires file editing to work, but it is most certainly doable.
Even for me who is used to that stuff, editing the file, check the logs for typos or syntax errors, purge the cache, etc. is a bit of a chore. And before that, downloading or moving the tracks around, and also maybe convert them to ogg/vorbis format.
I was thinking about our fellow spacers who don't have that kind of skill. They are basically stuck with the pre-packed music those who have the know-how provide; but if there's one thing that varies a lot, it's music tastes.
So I'm looking for ways to make this customization more accessible. If there were a way for an OXP to scan the content of a specific folder (for instance, oolite-saves/Local), with some naming conventions (for instance <duration>-<volume>-<event>-<title>.ogg) the OXP could build a playlist and it would require relatively basic skills from users (converting to vorbis format and renaming files).