Connect the record player or stereo to the computer using a headphone cable. In particular this should be an RCA-to-headphone cable. One end of the cable is plugged into the line or audio-out plug on the record player or stereo. The other end is plugged into the line or audio-in plug on the sound card in the computer. Depending on the record player it may first need to be plugged into the stereo and then the stereo connected to the computer. This is required for a record player that does not have its own amplifier. If the amplifier is in the record player then it can be connected directly to the computer.
Download and install mp 3-recording software if a program is not already on your computer. Open the program and set appropriate recording levels.
Select record in the software and turn the record player on. As the record plays it will be recorded into the computer. Select stop after each track has played or record the entire record as one track.
Name the track or record with the title, artists, genre or other descriptors. Once the files are named they can be burned to a CD or transferred to other portable music media.