许多朋友经常需要对一些音频进行编辑，但是被音频软件复杂的界面和昂贵的价格搞得无所适从。现在，可以试一试Audacity(http://audacity.sourceforge.net/)。 Audacity是一款免费、开放源码、易于使用的音频编辑器和录音器，可运行在Windows、Mac OS X、GNU/Linux及其它操作系统上。可以使用Audacity进行现场录音、将磁带和录音带转录为数字录音或CD、编辑MP3及WAV音频文件、剪切、拷贝、接合及混音、改变录音的速率和音高等。
可见介绍：http://www.ossw.com.cn/bencandy.php?id=77



下载安装
安装环境为红旗桌面4.1plus，因为Audacity需要wxwindows支持，但是4.1plus并不带wxwindows所以需要单独下载。
下载Audacity的linux版本源码包，下载wxwindows的rpm包wxGTK-2.4.2-1.i386.rpm、wxGTK-devel -2.4.2-1.i386.rpm（如果下载的版本高会需要glibc2.4支持，而plus自带的gilbc2.3.2，如果升级glibc那就太麻烦了）。安装wxGTK*.rpm，编译安装Audacity。
Audacity运行时可能会提示“初始化音频I/0层的时候发生错误，您将无法播放或录制音频”，这个问题可以从以下三方面分析：1、Audacity 运行前，其他程序不能占用声卡；2、调节采样率试一下；3、可能alsa驱动不行，请换oss驱动。我没有换oss驱动，但是最后搞好了。但怎么搞定的现在也没有明白。首先关掉gaim，firefox，终端等，关掉所有可能出声的程序，然后重新配置了一下声卡。最后可以正常使用了。
测试了播放，肯定没有问题。录音也没有问题。感觉界面比较不错，功能还有待完善，不过现在完全能满足要求。　

网上对于初始化音频I/O失败的解释
* If you get an error like this "Error Initializing Audio: There was an error initializing the audio i/o layer. You will not be able to play or record audio. Error: Host error." then audacity cannot access your sound card. Audacity cannot use the audio i/o layer when it is in use by another application. If you are using Gnome, KDE or another window manager, be sure to disable the system sounds before starting Audacity.

** If this still happens when nothing else is using audacity then you may have a sample rate selected that your card does not support. You can alter this by changing the Project Rate at the bottom left of the screen.

** Another possibility is that somehow, the link to /dev/dsp, or its permissions, were changed without your knowledge by an unknown process. What you should do (as root) is:

$ rm /dev/dsp;ln -s /dev/dsp0 /dev/dsp #also try /dev/dsp1,2,etc.
$ chmod 666 /dev/dsp0
$ chmod 666 /dev/dsp
If you are using udev in the 2.6 kernel then you may need to alter /etc/udev/rules.d/*.rules to set the correct permisions up permanently.

* If you are running a sound server as eSound, asd or aRts you will have to disable it before using Audacity. Check the last part of this URL: http://audacity.sourceforge.net/unix.php For users with OSS builds of audacity and aRts, you can also use the wrapper provided by aRts and run:
: $ artsdsp audacity