If you want to connect a turntable to a stereo system, the system must have a dedicated phono input. The reason is simple: the output of a phono cartridge is not high enough for the RCA input jacks on a receiver or integrated amplifier so when you connect a turntable to an AUX or TAPE input you'll hear nothing. A turntable signal also requires equalization, known as RIAA equalization to hear the correct tonal balance. The solution can be as simple and affordable as adding an outboard phono preamp, such as the Audio-Technica AT-PEQ3. Read my profile of the Audio-Technica AT-PEQ3 and learn more about phono preamps.