From the author's README on Thunderstore

Adds 16 songs from System Of A Down's-Self Titled to skate.

Playlists & Tracklist

System Of A Down (Deluxe)

System Of A Down - Suite-Pee
System Of A Down - Know
System Of A Down - Sugar
System Of A Down - Suggestions
System Of A Down - Spiders
System Of A Down - DDevil
System Of A Down - Soil
System Of A Down - Mind
System Of A Down - Peephole
System Of A Down - CUBErt
System Of A Down - Darts
System Of A Down - P.L.U.C.K.
System Of A Down - Sugar (Live at Irving Plaza, NYC, NY - January 1999)
System Of A Down - Suite-Pee (Live at Irving Plaza, NYC, NY - January 1999)
System Of A Down - Know (Live at Irving Plaza, NYC, NY - January 1999)
System Of A Down - Marmalade

Installation

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

Packaged with ReSkate Music Packer

Install System Of A Down Self Titled

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

Open ReSkateLauncher.exe and go to MODS.
Search for System Of A Down Self Titled 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.