From the author's README on Thunderstore

Adds 17 song(s) to skate.

Playlists & Tracklist

Sonic R OST

Back In Time (Instrumental) - SEGA - Topic (128k)
Can You Feel The Sunshine (Instrumental) - SEGA - Topic (128k)
Diamond In The Sky (Instrumental) - SEGA - Topic (128k)
End Fanfare - SEGA - Topic (128k)
Living In The City (Instrumental) - SEGA - Topic (128k)
Number One - SEGA - Topic (128k)
Options Screen - SEGA - Topic (128k)
Radiant Emerald Diamond In The Sky - SEGA - Topic (128k)
Radical City Living In The City - SEGA - Topic (128k)
Reactive Factory Work It Out - SEGA - Topic (128k)
Regal Ruin Back In Time - SEGA - Topic (128k)
Resort Island Can You Feel The Sunshine - SEGA - Topic (128k)
Start Fanfare - SEGA - Topic (128k)
Super Sonic Racing (Instrumental) - SEGA - Topic (128k)
Super Sonic Racing - SEGA - Topic (128k)
Title Screen - SEGA - Topic (128k)
Work It Out (Instrumental) - SEGA - Topic (128k)

Installation

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

Packaged with ReSkate Music Packer

Install Sonic R OST

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

Open ReSkateLauncher.exe and go to MODS.
Search for Sonic R OST 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.