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FreeBSD 多媒体与 Web 服务器使用指南

1. FreeBSD 多媒体功能

1.1 CD 播放器

KDE 自带了一个 CD 播放器，该播放器支持 CDDB 系统，这意味着它可以自动从互联网下载专辑和曲目信息。

1.2 混音器

FreeBSD 提供了一个可以通过命令行访问的混音器。
-显示当前混音器设置：在命令提示符下输入mixer并按回车键，示例输出如下：

Mixer vol is currently set to 90:90 Mixer bass is currently set to 75:75 Mixer treble is currently set to 75:75 Mixer synth is currently set to 75:75 Mixer pcm is currently set to 75:75 Mixer speaker is currently set to 75:75 Mixer line is currently set to 75:75 Mixer mic is currently set to 32:32 Mixer cd is currently set to 75:75 Mixer mix is currently set to 0:0 Mixer igain is currently set to 75:75 Mixer