forked-daapd 不起作用，我不知道为什么！

Question

我正在使用 ubuntu 服务器 11.10，我已经安装了 forked-daapd，这是它的配置文件：

    general {
        # Username
        uid = "musica"
        logfile = "/var/log/forked-daapd.log"
        # Database location
        db_path = "/var/cache/forked-daapd/songs3.db"
        # Available levels: fatal, log, warning, info, debug, spam
        loglevel = spam
        # Admin password for the non-existent web interface
        admin_password = "unused"
        # Enable/disable IPv6
        ipv6 = no
}

# Library configuration
library {
        # Name of the library as displayed by the clients
        # %h: hostname, %v: version
        name = "Musica %h"
        # TCP port to listen on. Default port is 3689 (daap)
        port = 3689
        # Password for the library. Optional.
#       password = ""

        # Directories to index
        directories = { "/media/musica/" }
        # Directories containing compilations
        # Matches anywhere in the path (not a regexp, though)
#       compilations = { "/compilations/" }

        # Should iTunes metadata override ours?
#       itunes_overrides = true

        # Formats: mp4a, mp4v, mpeg, alac, flac, mpc, ogg, wma, wmal, wmav, aif, wav
        # Formats that should never be transcoded
#       no_transcode = { "alac", "mp4a" }
        # Formats that should always be transcoded
        force_transcode = { "ogg", "flac" }
}

# Local audio output
audio {
        # AirTunes name - used in the speaker list in Remote
        nickname = "Computer"
        # Audio device name for local audio output
#       card = "default"
        # Mixer channel to use for volume control - ALSA/Linux only
        # If not set, PCM will be used if available, otherwise Master.
#       mixer = ""
}

# Airport Express device
#apex "ApEx" {
        # AirTunes password
#       password = "s1kr3t"
#}

当我启动 forked-daapd 时，输出如下：

    root@petra:/media/video# service forked-daapd restart
    Restarting RSP and DAAP media server:     main: Forked Media Server Version 
0.19 taking off main: Initialized with gcrypt 1.5.0
    forked-daapd.

这是日志文件：

[2012-01-03 17:18:29]     main: Forked Media Server Version 0.19 taking off
[2012-01-03 17:18:29]     main: Initialized with gcrypt 1.5.0
[2012-01-03 17:18:29]     main: PID: 12319
[2012-01-03 17:18:29]     main: mDNS init
[2012-01-03 17:18:29]     mdns: Initializing Avahi mDNS

问题是 banshee 和 rhythmbox 看不到 daap 服务器，如果我手动添加 daap 共享，什么也不会发生！

我能做什么？我已经更改了日志级别 = spam，但 forked-daapd 没有在日志文件中显示任何其他信息