Spanish language Q&A Forum

The question given is: De los dos películas esa es la peor.

The multiple choice answers are

Out of those two films that one is very bad /  better / bad / worse.

Since película is à “feminine “ noun; Should the question not be De ESAS dos películas esa es la peor. Or perhaps De LAS  dos películas esa es la peor.

Please help me with “Me encanta tu casa”. I understand “Me gusta” as it pleases me.  However I have difficulty applying this to “It loves (encanta)  me your house”.  

How to decide to use por (for because) versus porque (as in the example above):

Would it be correct to use porque in these examples?  How would one know which to use (por vs porque)?

Ha salido en la televisión por tener quince minutos de fama.
He's been on TV because he was famous for fifteen minutes.

Va a estudiar medicina por seguir la tradición familiar.
She is studying medicine because it's family tradition.

I ask because in the recording for "Yo vivo en Córdoba" it's a "yo" sound. But for the "Yo vivo en el barrio de Gràcia" recording it's a soft j sound resulting in "jo".

When I practice at Duolingo I also sometimes here the y vs. j difference. Are both interchangeable in Spanish? If no, what are the rules for choosing j vs. y?

Or, is the recording audio simply not of good quality?