A cassette player, like all other tape players, has a 'head' that 'reads' changes in a magnetic field. These changes are encoded onto the tape in the recording process. An adapter has a device which is held next to the cassette player head that creates magnetic fields identical to those found on a cassette tape. So the output of the MP3 player is converted from a voltage into a magnetic field, which the tape head detects and converts into a voltage, which is amplified and sent to the speakers.
I am having problems getting mine to work in my 1995 explorer as well. If you find out how, please let me know!!
Most likelly ur car stereo cassette player has an auto rewind feature that keeps rewinding the tape
you cannot pause or play