The murmur ebuild creates an sqlite database for murmur in /var/lib/murmur/murmur.sqlite. The application itself creates it in /usr/bin/murmur.sqlite, because the location has not been set in /etc/murmur/murmur.ini This should be already done in the preconfigured ini file after installing the package. Reproducible: Always
Should be fixed with murmur-1.1.6, please reopen if the problem persists.