Tony : Tonari no heya ni, dare ka iru no ka na - Are there anyone in the room next door?
Kobayashi : Saa - There?

Tony : Koe ga (kiku) kikoenai ka - Can’t you hear the voice?
Kobayashi : Aa, dare ka ga iru rashii desu ne - Oh Yeah, there seems to be someone in there

In the above example, it is obviously that “~Rashii” means “Seems To Be / Seems To”. Let me show you some other examples.

Tony : Kono jidōhanbaiki wa otsuri ga demasen yo
Tony : This vending machine doesn’t dispense change

Murata : Chotto matte kudasai, koshō shite iru rashii desu
Murata : Please wait for a moment, it seems to be out or order (broken down)
 

Tony : Ano hito wa, sakki kara chizu o (miru) miteimasu ga
Tony : That person is excitedly looking at the map

Kobayashi : Hai, michi ga (wakaru) wakaranai rashii desu
Kobayashi : Yes, he doesn’t seems to know the way