It is mumble-server, see:
#apt-get install mumble-server Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: apache2 apache2-mpm-worker apache2-utils apache2.2-bin apache2.2-common avahi-daemon dbus ice33-slice ice33-translators libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap libavahi-client3 libavahi-common-data libavahi-common3 libavahi-compat-libdnssd1 libavahi-core6 libcgi-session-perl libdaemon0 libdbi-perl libdbus-1-3 libfont-afm-perl libglib2.0-0 libglib2.0-data libhtml-format-perl libhtml-parser-perl libhtml-tagset-perl libhtml-template-perl libhtml-tree-perl libiceutil33 libmailtools-perl libmcpp0 libmysqlclient16 libnet-daemon-perl libnet-dbus-perl libnss-mdns libplrpc-perl libprotobuf5 libqt4-dbus libqt4-network libqt4-sql libqt4-sql-mysql libqt4-sql-sqlite libqt4-xml libqtcore4 libslice33 libtie-ixhash-perl libtimedate-perl liburi-perl libwww-perl libxml-parser-perl libxml-twig-perl libxml-xpathengine-perl libzeroc-ice33 mumble-server-web mysql-common php-zeroc-ice php5-cli shared-mime-info Suggested packages: apache2-doc apache2-suexec apache2-suexec-custom avahi-autoipd dbus-x11 dbishell libdata-dump-perl libipc-sharedcache-perl libqt4-dev libcrypt-ssleay-perl libio-socket-ssl-perl libunicode-map8-perl libunicode-string-perl xml-twig-tools mumble mumble-django php-pear The following NEW packages will be installed: apache2 apache2-mpm-worker apache2-utils apache2.2-bin apache2.2-common avahi-daemon dbus ice33-slice ice33-translators libapr1 libaprutil1 libaprutil1-dbd-sqlite3 libaprutil1-ldap libavahi-client3 libavahi-common-data libavahi-common3 libavahi-compat-libdnssd1 libavahi-core6 libcgi-session-perl libdaemon0 libdbi-perl libdbus-1-3 libfont-afm-perl libglib2.0-0 libglib2.0-data libhtml-format-perl libhtml-parser-perl libhtml-tagset-perl libhtml-template-perl libhtml-tree-perl libiceutil33 libmailtools-perl libmcpp0 libmysqlclient16 libnet-daemon-perl libnet-dbus-perl libnss-mdns libplrpc-perl libprotobuf5 libqt4-dbus libqt4-network libqt4-sql libqt4-sql-mysql libqt4-sql-sqlite libqt4-xml libqtcore4 libslice33 libtie-ixhash-perl libtimedate-perl liburi-perl libwww-perl libxml-parser-perl libxml-twig-perl libxml-xpathengine-perl libzeroc-ice33 mumble-server mumble-server-web mysql-common php-zeroc-ice php5-cli shared-mime-info 0 upgraded, 61 newly installed, 0 to remove and 0 not upgraded. Need to get 17.6MB/20.1MB of archives. After this operation, 58.9MB of additional disk space will be used. Do you want to continue [Y/n]?