From the author's README on Thunderstore

POST MALONE'S Stoney

Playlists & Tracklist

Stoney

Post Malone - Broken Whiskey Glass
Post Malone - Big Lie
Post Malone/Justin Bieber - Deja Vu
Post Malone - No Option
Post Malone - Cold
Post Malone - White Iverson
Post Malone - I Fall Apart
Post Malone - Patient
Post Malone - Go Flex
Post Malone/Kehlani - Feel
Post Malone - Too Young
Post Malone/Quavo - Congratulations
Post Malone - Up There
Post Malone - Yours Truly, Austin Post
Post Malone - Leave
Post Malone - Hit This Hard
Post Malone/2 Chainz - Money Made Me Do It
Post Malone - Feeling Whitney

Installation

Install via Thunderstore Mod Manager, or drop into your ReSkate launcher.

Packaged with ReSkate Music Packer

Install POST MALONES Stoney

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for POST MALONES Stoney and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.