I have an Ion TTUSB05XL turntable, hooked to an ASUS laptop running Windows 8 or 8.1. I am using Audacity 2.3.2, during recording today everything was fine for 2 to 3 minutes into the song it stopped recording and sounded like a heartbeat. I use play-through to listen while I record but all I hear is a heartbeat (rhythmic) for 3 to 4 seconds it stops recording then starts again and music is not recorded.
It might be something simple like a loose USB connection or a bad USB cable. Have you tried unplugging & re-plugin the USB cable or just starting-over?
It stopped recording in the middle of the song USB cable is connected I tried undoing usb cable reconnect it and also deleting audacity program on my computer in and reinstalling program.