SubeR / MUSICIAN
Your music. One flowing mix.
Choose MP3s → arrange & preview → download one MP3.
Beta: browser/device listening and long-session testing are still pending. Test the downloaded mix before a party and keep a backup player.
No uploads or accounts. Your original files and saved DJ library stay untouched.
Hear it first
Two original synthesized clips, generated on your device. Before plays them end-to-end with their silent tails. After applies the same silence suggestions and crossfade engine used for your files. These are tone demos, not real artist recordings or a promise of perfect mixing.
No autoplay. iPhone: turn Silent Mode off and raise media volume gently.
Build your playlist
Presets change the overlap, not your track order or tempo. Move songs using ↑ / ↓. Cuts and fades are editable; nothing overwrites an original.
Up to 60 minutes · 128 kbps MP3. Long mixes may run out of memory on phones. Try a short mix first; keep this page open and your device awake. An hour of output is about 58 MB, plus processing memory. No 90-minute export in this beta.
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What this version does — and does not
Silence suggestions use a conservative amplitude threshold with padding. Quiet musical endings can still be misclassified: listen before applying. Repetitive verses, long musical outros, beats, key and crowd energy are not automatically recognized. Shorten those manually using End, then preview the transition. Crossfades are linear volume overlaps, not beatmatching. Transitions are shortened when a selected clip is too short.
Individual peaks are attenuated only when needed; audio is not boosted or loudness-normalized. The mix keeps sample-peak headroom, but perceived loudness and MP3 true peaks can still vary. Preview at a sensible volume before playing to a crowd.
First version: 40 files, 12 MiB per MP3, 240 MiB selected, mono/stereo, 6 minutes per track and 60 minutes of output. Export is stereo 44.1 kHz / 128 kbps MP3, a smaller-file compromise rather than venue-master quality. Re-encoding already compressed MP3s can reduce quality. Decoding is one track at a time; short transition tails and encoded output stay in memory. Browser decoder memory can vary; long files and unsupported formats are refused. These are conservative product limits, not universal browser limits. A 60-minute MP3 is about 58 MB; allow additional memory and download space. For longer sets, split the playlist for now. Keep this page open and the device awake; switching apps, background throttling, screen lock or calls may interrupt preview or export. A downloaded MP3 plays in your normal player. Transition previews are excerpts of up to 32 seconds, not the whole playlist.
Processing and temporary edits stay on this device; no persistent playlist saving in this first version. Leaving or reloading loses edits and an undownloaded mix. Stop cancels processing or preview; it may take a pending browser decode to settle before memory is released. Downloads are ordinary unencrypted files and your downloads folder may sync. Existing library and unrelated preferences are not read or changed.
Use files you have permission to edit and play. No streaming-service downloads, DRM removal or Spotify imports. MP3 encoder licences & source.