From Viscom Software:
For Professional Windows Developers who need to audio capture from audio input pin. for example, Line In , Microphone, Stereo Mix, Mono Mix, Aux, Video, CD Audio, and Phone Line. Capture audio from selected audio device. Capture audio to Wave, WMA, MP3 file format. Capture audio from selected audio input pin. for example, online streaming audio, radio, audio players (e.g. Media Player, WinAmp, Real Player ), Line In , Microphone, Stereo Mix, Mono Mix, Aux, Video, CD Audio, Phone Line. Support multiple audio devices and mixer lines. Adjust volume level for mixer line. Change the audio pitch to male, female child voices. Pause or Resume when recording. Include VB.Net,VFP, VB , VC++, Delphi Sample source code. Royalty free distribution of the OCX file.
Compatible with any programming language that supports ActiveX (Access, Visual C++ , Visual Basic, Visual Foxpro, Delphi, .Net). Version 2 includes unspecified updates.
What's new in this version:
Version 4.0: fixed sync issue when display waveform;
added capture audio from speaker, your sound card does not need have Stereo Mix audio input pin (For Window 7, Window 8 and vista only);
improved more stable on vb.net and c# application;
added CaptureSpeaker property;
added GetAudioDeviceCount, GetAudioDeviceName, GetAudioInputPinCount, GetAudioInputPinName, GetWMVProfileCount, GetWMVProfileName methods.
updated vb6, vb.net 2010 and c# 2010, vc , delphi samples.