.SLP File Extension

An SLP file contains a project created by Steinberg SpectraLayers Pro, an advanced audio spectrum editor; supports multiple audio layers with each layer containing independent edits and filters; enables unmixing of standard audio files, sound isolation, and custom sound shaping; used by sound engineers and audio-video editors.

SLP files save references to the source media files, layers, edits, and applied filters. SpectraLayers Pro was developed by Sony until it was sold to MAGIX in 2016, and then was acquired by Steinberg in 2019.

An SLP file may also be a Super Smash Bros. Melee match replay created by Project Slippi. It contains a replay and statistics about the match shown in the replay. You can play SLP files in the Slippi Launcher desktop app.

Project Slippi is a fan-made extension to Super Smash Bros. Melee that adds several features. One of the features Project Slippi adds is the ability to automatically save match replays as SLP files.

With this feature enabled, after a match played using Project Slippi concludes, the program automatically saves a replay of that match and the match's statistics in an SLP file. Players can watch the replay by transferring it to their PC and opening it in Slippi Launcher, which is available for Windows, macOS, and Linux.

You can open an SLP file in Slippi Launcher (multiplatform) to play the replay it contains. The easiest way to open an SLP file is to place it in the ~/​Users/​YourUserName/​Slippi directory, select Slippi Launcher's Replays tab, and then open your SLP file.

Project created with with Sisulizer, a visual software localization tool; saved in an XML format and contains the localization project data; stores all project translations and modifications.

An SLP file may also be a mod file used with Stormworks, an air sea rescue simulation game. It contains data used to modify Stormworks's default gameplay. SLP files are installed using StormLoader, an open-source mod manager for Stormworks.

To import an SLP file into StormLoader, select the Add button located in the program's upper left-hand corner. You can import any number of SLP files before launching a modded game of Stormworks (by selecting StormLoader's Launch button).