At the start of the episode a cassette player was cleanly stopped by simply ejecting the cassette. This was not possible in many cassette players and for those that could eject whilst in play it would make a distorted noise.
When Sarah is posing as a nurse she is wearing high heels. Nurses don't wear high heels, they wear rubber soled flats to reduce the possibility of twisting an ankle and/or slipping.
Amaya reads from Rip Hunter's film clap board "Glucas", whereas it is clearly written ad DP. G. Lucas.