In-Line Recording: Line recording, line-in recording, sound recorder software, phone manager plus, phone tape recorder, USB port to PC voice phone recorder, are all great for individuals looking for vindication if they ever get scooped or noosed on their phone conversations. If you save your recorded telephone sound from a microphone, line-in, by streaming audio also from the Internet, your recorded voice can be further more saved in WAW-file format or mp3 format. In-Line Recording or Line-In recording is often used by sound equipment prodders to refer to the capability of a recording device to record line level audio feeds. Microphones and audio instrument inputs, by comparison, are designed for recording devices which require further amplification to be at line-level.