You can use any sound card: integrated, add-on card or external device (USB or FireWire). Sound Card should have DirectX-compatible audio drivers. Recording capabilities no longer depends from the "Stereo Mix" feature.
Yes, this is possible if some application already used sound card in Exclusive mode. Possible solutions:
Yes, this is possible if your record from the "Speakers" in loopback mode. i-Sound get audio stream "as-is" without any modifictions. Recording level in this mode depends only from playback volume level.
No, we use only standard Windows API.
Open Settings and turn on Auto-names feature. Recorder will generate file name automatically using current date/time.
i-Sound support DRM and will not record DRM-protected audio streams.
In most cases it's a problem with secondary display. Recorder remember last window position and will appear outside desktop if secondary display inactive.
i-Sound settings located at this folder:
"C:\Users\your user name here\AppData\Roaming\Abyssmedia\i-Sound\"
Open it and remove "isound.xml" file.