so i configured some (more) virtual hosts in apache and redid my custom error pages. the error pages got reset after apache got updated recently, so i had to redo them. you can see a 403 forbidden error here and a 404 not found error here.
and i also set up the following subdomains:
all of the old links will still work (at least for a while), but the old music page (/ampache site) will no longer receive updates as all the updates will be done on the music.jazzsequence.com.