Hey everyone,

A while back I posted headroom here — a CLI tool that simulates Rekordbox's Auto Gain and bakes the gain into the file so CDJs don't lose it on USB. Thanks for the feedback on that thread — v2.0 is out, and it adds something I kept wishing for in Rekordbox itself.

The Problem (again)

Rekordbox has a lot of features that live entirely inside the laptop app. Auto Gain was the original one. The other one that always bites me is sort order: I want a playlist sorted by Camelot Key, then BPM ascending, so I can stage a harmonic warmup set.

Rekordbox (and the CDJ-3000 / XDJ gear) lets me sort by Key or BPM as a single column — but not by Key then BPM as a compound sort. And even that single-column sort only changes the on-screen display: USB export uses the playlist's stored order, so any reshuffling you did on screen evaporates the moment it hits the CDJ.

Same pattern as Auto Gain: the software-only feature doesn't follow the music to the deck.

The Solution

v2.0 adds a new headroom rbsort subcommand ←New💖

1. Reads your collection.xml (Rekordbox: File > Export Collection in xml format)
2. Sorts each playlist by Camelot Key (1A → 12B), then BPM ascending
3. Writes the sorted copies into a new Sorted (Key+BPM)/ folder appended to the same XML
4. Leaves originals untouched

You re-import the XML via Preferences > Advanced > Database > rekordbox xml > Imported Library, drag the sorted playlists into your main library, and export to USB. The CDJ now plays the set in Key+BPM order — no on-deck reshuffling.

Run it on a single playlist, a nested folder, or just point it at the XML and it'll sort every TrackID-referenced playlist in one pass. No ffmpeg required for this subcommand — pure XML in/out.

Setup note

You need Rekordbox key display set to Alphanumeric (1A..12B): Preferences > View > Key display format > Alphanumeric. Anything still showing in Am / C# notation gets sorted last.

Loudness side (the original feature)

Still here, behavior unchanged. Quick recap of what landed since the original post:

• Uniform True Peak ceiling at -0.5 dBTP by default — the most aggressive value AES TD1008 §7B sanctions for a delivery limiter. Overridable via --tp-target.
• Lossless AAC/M4A gain in addition to MP3 (1.5 dB steps, via the bundled mp3rgain library)
• Scriptable CLI flags so you can run it from a pipeline without the interactive prompts

Installation

macOS (Homebrew):

brew install M-Igashi/tap/headroom

Windows (winget):

winget install M-Igashi.headroom

Arch Linux (AUR): yay -S headroom-bin Cargo: cargo install headroom

Links

• Site: https://headroom.ravers.workers.dev
• GitHub: https://github.com/M-Igashi/headroom
• Previous thread: https://www.reddit.com/r/Rekordbox/comments/1q7sxqq/headroom_simulate_rekordbox_auto_gain_for_cdj/

Feedback and PRs welcome as always 🙏

The red text at the bottom says ‘there is no data analysis of the stems function’ but this only appears on some songs, on others it’s fine.

I read on another post it was likely due to a lack of ram, but for me it’s only on some. Do I need to re analyse all my songs?

Thanks for any help

Salut à tous, je jette une bouteille à la mer, peut être qu’un de vous aura une solution !

J’ai déjà bien chercher et essayer pas mal de choses mais rien n’y fait…

J’ai un flx4 et tout marchais bien depuis cet été.

Aujourd’hui je le branche, je fait une mise à jour, la 7.2.14. Le contrôleur s’allume, les boutons clignotent, le logiciel le reconnaît, il apparaît dans les périphériques. Mais aucuns des boutons du flx4 ne marches, impossible de naviguer dans l’application via la molette centrale, idem pour charger une piste avec le bouton dédié. Alors je charge une piste avec ma souris d’ordinateur, le bouton play ne marche pas non plus…

J’ai éteint/rallumé l’appli et l’ordinateur.
J’ai désinstaller et réinstaller rekordbox.
J’ai vérifier mes pilotes audio, ils sont à jours.
J’ai changer plusieurs fois de câble et de port usb/usb c, aussi vérifié d’être brancher sur la bonne alimentation sur le contrôleur..

Donc je suis un peu perdu… Si quelqu’un a une solution merci

I have a Rekordbox playlist from streamed Beatport with hundreds of tracks, they all have hot cue points.

I now would like to bulk buy said files from Beatport and retain the hot cue points on RKB.

So far I've tried to soundiiz.com to first build the list of files on Beatport to bulk buy the files, but unfortunately it's not fully accurate... for example, it finds the track but as an original mix instead of extended version I have saved on my RKB playlist. Or it finds the track but not the version I also have saved.

Remember, this list is made of only Beatport files, so the exact version I have saved is on RKB, so it very much exists, its just not finding it.

Once I have managed to buy all the tracks, I'd like to automate the hot cue posts, there are way too many tracks for me to redo manually.

What is the most efficient and accurate way of building the same playlist on BP to buy the files and then maintain the hot cues on RKB?

whenever new songs come out, i can never seem to use them because its not downloaded? something or other, im rlly bummed bc i wanted to use some of that new horsegiirL in a set im working on but i cant seem to figure this out 😭 rlly sorry if this is a repetitive ask but thanks in advance squad

I've googled, I've searched, I've asked around.... Where on earth is it?

Yes I am in import mode.