Recording audio from an external source
I'd like to record audio from a tabletop radio even though there is no audio in jack on my Mac (iMac Retina 5K, 27-inch, 2017). The radio has a line out jack that's described as follows:
The radio can be used as a separate tuner by connecting this input to Hi-Fi system (amplifier) or using this input to make recording in mono from audio program.
I'm assuming (hoping) I can use a standard audio cable to connect to the radio and plug it into some kind of USB dongle that I can connect to my Mac and have it recognize it as a microphone.
Any ideas?