Mixtuby — Free YouTube Music Mixer & Playlist Player

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App Guide

What is Mixtuby?

A free YouTube music mixer. Paste links or browse curated albums, build playlists with A-B loop on each track, and enjoy crossfade playback. No account required.

Quick Start

1

Add music

Search for songs directly, paste YouTube links, or scroll down and tap any curated album card. Preview tracks before adding — tap ▶ to listen, drag the seekbar to seek, then tap + to add to your playlist.

2

Play & customize each track

Press Play, then tap the settings icon on any track in your playlist to set its speed, A-B loop region, and volume. Tap Next to save and move to the next track.

3

Enjoy continuous playback

Tracks play with smooth crossfade. Your playlist, position, and settings auto-save — come back anytime and resume where you left off.

Search & Preview

The fastest way to build a playlist — search, listen, and add without leaving the page.

▶
Preview a track Tap ▶ on any search result to hear it instantly. The full track plays in the main player with a seekbar on the result row.
DRAG
Seek within preview Drag the seekbar on the previewing track to jump to any point. A time bubble shows the exact position.
+
Add to playlist Tap + to add the track to your playlist. Preview stops automatically. Switch between results freely — only the last tapped plays.
TIP
Quick playlist workflow Search → ▶ preview → + add → search again → repeat. When done, tap Start Mix. Your previewed and added tracks are ready to play with crossfade!

Hidden Gestures

These are not obvious from the UI — learn them to get the most out of Mixtuby.

HOLD
Skip 5s buttons Tap to skip 5 seconds. Hold down to skip 5s every 0.3 seconds continuously until you release.
TAP / HOLD
A: and :B markers Tap the A: or :B label to set it to the current playback time. Long press to type a specific time manually.
TAP
✂ Share a segment When A-B loop is active, a ✂ duration label appears above the progress bar. Tap it to share that exact segment with a link.
HOLD
Theme toggle (moon icon) Tap to switch dark/light. Long press to activate system theme (follows your device settings automatically).
SWIPE
Pull to refresh (mobile) Pull down from the top of the page on mobile to reload.
DRAG
Reorder & resize playlist Drag the handle on any track to reorder. Swipe left to remove. Drag the bottom edge of the playlist to resize its height.

Per-Track Settings

Tap the gear icon on any track in your playlist to open its settings. Each track can have its own:

  • Speed — 0.25x to 2x (great for practice or podcasts)
  • A-B Loop — set start/end points, loop count, and what happens after loop ends
  • Volume — override the global volume for this track

Tap Next in the dialog to save and jump to the next track — perfect for setting up an entire playlist quickly.

Settings Panel

Open Settings (gear icon in navbar) to find these options:

Sleep Timer Set a timer (15m to 120m) and music fades out automatically. A countdown badge appears in the player. Tap again to cancel.
Notifications Enable notifications to see the track name when a new song starts, even when Mixtuby is in the background.
Crossfade & Gapless Crossfade blends tracks together (1-30s). Turn it off and enable Gapless for instant track transitions with no overlap.
Stars Theme, Video Quality, Audio Mode Enable animated stars background, choose video quality (360p–1080p), or switch to Audio-only mode to save data.

Rubber Duck (DJ Quack)

Digital debugging companion from The Pragmatic Programmer. Enable in Settings → Rubber Duck. Tap the duck button to summon DJ Quack — 12 skins, animated affirmations, particle effects. Explain your problem to the duck and find the solution yourself.

Learn more about Rubber Duck →

Sleep & Relax

Science-based sleep aid. Enable in Settings → Baby Sleep Game. In Sleep Mode, tap Sleep → choose a playlist (Baby, Rain, 528Hz...) → set timer → Start. Ducks fall slowly, tap to catch with warm particle effects. Screen dims progressively. Based on Cognitive Shuffle, bilateral tapping, and progressive dimming.

Learn more about Sleep & Relax →

Keyboard Shortcuts (Desktop)

Space Play / Pause
M Mute
← → Seek ±10s
↑ ↓ Volume ±10
N Next track
P Previous track
S Shuffle
R Repeat mode
F Fullscreen
1-200 Jump to track # (type fast for multi-digit)

Example: Gym Playlist

1. Paste your favorite tracks or load a curated album
2. Tap each track's settings icon → set A-B loop on just the chorus → tap Next
3. Hit Play — only choruses play, one after another, with crossfade. Non-stop energy!
4. Set a sleep timer if listening in bed. Install as app for the best experience.

Works for gym, running, studying, cooking, driving — any activity where you want only the best parts.

Why don't I always see ads?

Ad display is controlled entirely by YouTube — based on the video owner's monetization settings, autoplay behavior, your region, and your YouTube account. Mixtuby does not block ads. They may appear at any time.

How do I listen with the screen locked?

Sign in with YouTube Premium. As of 2026, YouTube restricts background playback on third-party sites for non-Premium users. With Premium, Mixtuby unlocks background playback automatically — including lock-screen controls and Bluetooth headphone buttons.

You're offline

Playback requires an internet connection. Your playlist and position are saved — music will resume automatically when you're back online.