Getting Songs From Pc to Phone

[Alberto94]

Basically I have a quite limited data plan, therefore I was wondering if it may be possible to transfer the encrypted music files downloaded from my pc Spotify app and get my android Spotify app to read them without having to download them twice.

Also since I have a 4.4 android phone I have to deal with the sd card limitations, will I be able to play my songs from the sd card while using the app?

Thank you for your consideration