From the author's README on Thunderstore

Adds 11 song(s) to skate.

Playlists & Tracklist

B4FN+

Nine Vicious - So FN
Nine Vicious - IMY
Nine Vicious - Movin On
Nine Vicious - Fuck Yo Gang
Nine Vicious - Me N Slime
Nine Vicious - A Song
Nine Vicious - All Fours
Nine Vicious - My Shooter
Nine Vicious - Skims
Nine Vicious - Came A Long Way
Nine Vicious - What Them Racks Do

Installation

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

Packaged with ReSkate Music Packer

Install Nine Vicious B4FN

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

Open ReSkateLauncher.exe and go to MODS.
Search for Nine Vicious B4FN 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.