Hey Aviel.
1. "o sea dos: ¿yo y quien mas? (0.16)
"O sea" means "meaning" or "I mean", as when one corrects oneself. For example:
Ya tenemos el reporte, o sea que no es necesario escribir otro.
We already have the report, meaning (that is to say) there is no need of writing another one.
Hubo 3... o sea 4 personas en la fiesta.
There were 3... I mean 4 people in the party.
2. "pues yo del sabado ya ni me acuerdo: un desparrame..." (0.43)
Well I don't even remember Saturday anymore: it is just a mess.
I am not really sure about the expression "un desparramo" it might be a Spanish expression. Probably Fernando will comment on that.
3. "¿que tal? ¿ha habido marchuqui? (1.03)
I don't know what "marchuqui" means... let's wait for Fernando.
4. "no tiene por que enterarse nadie" (1.47)
"No tiene por qué" = there is not reason for/to
No tengo por qué ir = I have no reason to go
Esto no tiene por qué fallar = this has no reason to fail.
Enterarse = realise, get to know
Ella se enteró de mi nuevo empleo = She got to know about my new job.
5. " y cuando se hayan desahogado, pues ya trabajaran, ¿no?" (2.22)
Desahogarse = to vent emotions.
"And when they have vented their emotions, then they will work, right?"