Buy the OST of the series

I would like to buy 2 songs:

- กีดกัน (Skyline) OST.แปลรักฉันด้วยใจเธอ - Billkin (the main song)

- แปลไม่ออก (From "I told sunset about you") - Billkin

I would like to buy them in lossless quality.

Do you know where I can buy them? They are in Thai so it is very difficult to find them on some music service sites.

Many thanks!

Can someone send me a link to the music playing in Episode 3 when they are boarding the boat and Oh-Aew is welcoming them with garland?