Did some more fixing and apparently broke it further more:
foging@basil:/etc$ sudo mt-daapd -f
Starting with debuglevel 2
Starting rendezvous daemon
*** WARNING *** The programme ‘mt-daapd’ uses the HOWL compatiblity layer of Avahi.
*** WARNING *** Please fix your application to use the native API of Avahi!
*** WARNING *** For more information see
Starting signal handler
Signal handler started
Initializing database
Query: vacuum
Error: unable to open database file
Aborting
foging@basil:/etc$ Rendezvous socket closed (daap server crashed?) Aborting.
Aborting
Aaargh! Running mtdaapd 0.2.4+r1376-2, and I have both sqlite and sqlite3 installed. I have also opened port 5353 from 224.0.0.251 and 3689 incoming from everyone (is that one necessary?)