How to Add Custom Sounds in Fleasion

Custom sounds are, for our money, the most satisfying thing you can do with Fleasion — a punchy hit marker, your favorite kill cue, a new gun sound, and the whole game feels different. We built three ways to set one (another Roblox sound, a link, or your own file), and there's one rule that trips up almost everyone, so we'll get it out of the way early: a replacement that's longer than the original plays silent. We wrote this once, in full, so the game guides can just point you here. For game-specific IDs, jump to Phantom Forces, Rivals, Da Hood or AR2.

We're not alone in loving them: in the 32 community Fleasion guides we've catalogued, gun sounds show up in 11 and hit/kill sounds in 13 — sound swaps of one kind or another are among the two or three most-covered things people do with the tool.

Which sounds can you change?

If Roblox plays it, we can usually swap it:

• Gun sounds — fire, reload, foley
• Hit markers — the cue when you land a shot
• Kill / final-kill cues — the sound on a kill or round-ending kill
• Headshot cues — a distinct hit sound for headshots
• Game-specific audio — like Da Hood's eating sounds
• UI sounds — menu and interface cues

Each is a profile in the Replacer tab: the sound's Asset ID on one side, your replacement on the other.

The three ways to set a custom sound

The Replace With field takes three kinds of source — pick whichever's easiest:

All three do the same job — when the game asks for the original, we serve yours.

Step by step: add a custom sound

1. Open Dashboard → Replacer and select your game.
2. Put the sound's asset ID in Asset IDs. To find it, browse the game's preset sound list or capture it with the scraper while you play.
3. In Replace With, add your replacement — a Roblox sound ID, a URL, or a local .ogg (Browse).
4. Name it clearly ("Custom hitmarker," "AK gun sound").
5. Add New. It shows up with Status: On.
6. Clear the Roblox cache (or turn on "Clear Cache on Launch"), then launch Roblox. Your sound plays once the game re-downloads through the proxy.

The one rule: keep it the same length or shorter

Here's the detail behind 90% of "my custom sound doesn't work" messages we get: a replacement sound that's longer than the sound it replaces plays as silence. This is strictest in Phantom Forces, where anti-cheat handling trims over-length audio to nothing.

So before you swap:

• Match or undercut the length. Trim your clip to the same length or shorter than the original.
• Use short, punchy samples for hit/kill markers — they're meant to be brief anyway.
• If a sound comes out silent, assume length first, trim, and clear the cache — the ID is usually fine.

Any audio editor (Audacity, or whatever you've got) will shorten a clip in seconds.

Where to get the sound (and the ID)

A few options:

• Reuse a Roblox sound. If the sound you want already exists on Roblox, just use its asset ID — no files needed.
• Capture IDs with the scraper. It records every sound a game loads, so you can grab the exact ID of "that gun's fire sound" and preview it in the built-in audio player.
• Community shares & presets. Players share sound packs and configs; importing a shared JSON or a PreJson sets everything up at once.
• Your own audio. Any short .ogg on your PC works as a local replacement.

This is the fast way to shop for a sound: the JSON viewer lists named options (Xonotic hit, TF2 killsound, Titanfall killshot, and so on) with their IDs, and the built-in audio player on the right lets you hit play and hear one before you commit. Found it? Use Import selected → Replacement ID and it drops straight into your profile.

Using your own audio file (local .ogg)

To use a sound that isn't on Roblox:

1. Get or export the clip as an .ogg, trimmed to the original's length or shorter.
2. In the profile's Replace With, click Browse and select the file (sets the mode to Local).
3. Add the profile, clear the cache, relaunch.

Since the file lives on your PC, it loads locally through the proxy — no upload required.

Applying it: clear the cache

Sounds only update after Roblox re-downloads them. Clear the cache or restart Roblox after adding one, and turn on Clear Cache on Launch so it's automatic. You can't change sounds mid-match either — exit, edit, relaunch.

Troubleshooting custom sounds

• The sound is silent → it's longer than the original (especially in Phantom Forces). Trim to the same length or shorter, then clear the cache.
• The old sound still plays → cached copy. Clear the cache / restart; turn on "Clear Cache on Launch."
• Nothing changed at all → wrong asset ID, or the profile is disabled. Re-capture the ID with the scraper and confirm Status is On.
• It worked, then stopped → the game updated and IDs shifted; re-scrape and update the profile.

Frequently asked questions

How do I add a custom sound in Fleasion? In the Replacer tab, put the sound's asset ID in "Asset IDs" and your replacement (a Roblox sound ID, a URL, or a local .ogg) in "Replace With." Name it, Add New, clear the cache, relaunch Roblox.

Why is my custom sound silent? Because it's longer than the sound it replaces. Roblox shooters — Phantom Forces especially — silence over-length replacement sounds. Trim your clip to the same length or shorter and clear the cache.

Can I use my own sound file? Yes. Use Local mode: click Browse and select a short .ogg on your PC. It loads locally through the proxy, no upload needed.

How do I find the ID of the sound I want to change? Enable the scraper and play — it captures every sound the game loads, with an audio preview, so you can copy the exact ID into a profile.

My custom sound stopped working after an update. Why? Game updates can change asset IDs. Re-capture the current ID with the scraper, update the profile, and clear the cache.

Updated July 2026 — added a screenshot of the sound library and audio player, plus a note on how common sound swaps are.

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Related: How to use Fleasion · Custom hit & kill sounds · Phantom Forces sounds · Rivals sounds · Presets & configs