NCH SoundTap NCH Swift SoundTap 是一款计算机声音捕捉程序，它能够将计算机声卡输出的任何声音自动录制下来，而后进行保存，然后再把他们转换为各种格式。

SoundTap lets you record just about any audio that plays through your Windows computer. Simply install this software, turn it on and then all sound played on or through the PC will be recorded as wav or mp3 files. All audio is 'tapped' by a virtual driver directly within the kernel so the process is perfect digital quality.
Typical applications of this streaming audio recorder are:

Recording streaming audio broadcasts (almost all types of streams can be recorded).
Record VoIP calls on softphones (eg. Skype) or instant messaging audio (eg. Messenger).
Record internet radio and other online audio or webcasts.
Record internet music from free sources.
Converting audio recorded in 'proprietary' audio formats to wav or mp3. As long as you still have the player, you can use SoundTap to save the audio in other formats (eg. mp3).
As a streaming audio conference recorder.