After finishing the schematic, it's time to start the PCB layout. First this requires some decisions on what component shapes to use. All the ICs are easy, these are just standard DIP packages. The capacitors are all ceramic discs, but with a 5mm pitch, where 2.54 is more common these days. Resistors are all good, old-fashioned standards 0.25 W radials with a 10 mm pitch.
For the 3.5 mm jacks that connect the power and the tape recorder I chose a model that's available at almost every electronics shop. (Sparkfun sells it as '3.5 mm Audio Jack'). And for the RF or Video out a very standard RCA jack will do.