Slopsmith - one week later: desktop app, in-browser amp sim, and a growing community
Brand new discord server: https://discord.gg/yTp8V5X9H6
It's been just over a week since i shared slopsmith here, and I'm honestly blown away by the response. 93 stars, 13 forks, 4 contributors, 7 merged PRs from the community, and 3 people have already built their own plugins. Thank you all.
Here's what's happened since the first post:
Slopsmith Desktop - For those who found Docker intimidating, there's now a standalone desktop app. No Docker, no terminal - just download and run. It includes everything from the web version plus a native audio engine built with JUCE:
VST3/AU/LV2 plugin hosting - load your amp sims, pedals, and effects directly
Neural Amp Modeler (NAM) - load .nam capture files for amp modeling with GPU-accelerated inference
Cabinet IR loading - load your own impulse responses
Automatic tone switching - the signal chain changes as tones change during a song, matching what the CDLC author intended
Real-time pitch detection for tuning and note feedback
https://github.com/byrongamatos/slopsmith-desktop
NAM Tone Engine plugin - The same amp modeling is now available in the web version too, as an installable plugin running entirely in your browser via WebAssembly. Plug your guitar into any USB interface, load a .nam model and cabinet IR, and play through it with no external software. Tone auto-switching and guitar stem ducking (mutes the guitar stem in sloppak songs so you play "for real" in the mix) work the same way. This started as a https://github.com/byrongamatos/slopsmith/issues/8 - i built it after the original author didn't follow up.
Community contributions since launch:
topkoa - sloppak open format with multi-stem support, splitscreen plugin, sloppak converter + stems mixer, vocals SNG decoder for official DLC lyrics, highway API extensions
jweibel22 - left-handed mode, ARM architecture fix
masc0t - MIDI capo, invert highway, "Find More CDLC" search plugin
renanboni - Jumping Tab (Yousician-style horizontal tab view)
asktoby - Windows 11 install tutorial
Other new features:
Multiplayer - join a room with friends, play together with synced highways. Shared song queue with voting. Optional recording + built-in mini DAW mixer for post-session mixdowns Lyrics Sync - paste plain text lyrics + a sloppak song with vocals stem, and Whisper AI generates a time-synced .lrc file
6-stem separation - Demucs now splits into guitar, bass, drums, vocals, piano, and other (via remote GPU server)
Plugin update checker - Settings now shows available updates for installed plugins with one-click update
30+ plugins in the directory and growing
The plugin system is the part I'm most proud of - anyone can build a plugin with just a plugin.json, an HTML file, and some JS. No build tools, no framework, no dependencies. Seven community plugins already exist from people i've never met.
https://github.com/byrongamatos/slopsmith | https://www.youtube.com/watch?v=f_XTS9tVeaU | https://github.com/byrongamatos/slopsmith-desktop