Pro 1.90 | Otsav Dj
This is the feature that keeps OtsAV DJ Pro 1.90 in professional radio stations and high-end wedding DJ racks.
"Next-On Cue" (NOC) decks are background players. While you are mixing on Deck A and B, Decks C and D (NOC 1 & 2) are silently playing the next tracks in the background.
Why is this revolutionary? In Serato, when you load a track, it seeks to the cue point. In OtsAV 1.90, by the time you move the crossfader, the NOC deck has already scanned the track, verified the bitrate, and is looped at the intro. This allows for zero-latency hard cuts. For radio jingles or fast-paced club mixing, this feels like cheating—in a good way.
If you still use a traditional DJ mixer (e.g., Rane MP2015 or Pioneer DJM-900) and two laptops (or two sound cards), OtsAV 1.90 acts as the perfect digital vinyl system. Because you aren't reliant on a controller's platter, the lack of modern MIDI mapping doesn't bother you. OtsAV DJ Pro 1.90
After analyzing the quirks and strengths, this version is not for everyone. However, three specific user groups benefit from it:
Perhaps the most defining feature of OtsAV DJ Pro 1.90 was its refusal to use standard MP3 files directly in the mixing engine. While other software simply played MP3s, Ots Labs required users to convert their audio into a proprietary format: .OTS.
At the time, many users viewed this as a hindrance. Why should a DJ have to convert their library just to use the software? However, this "hindrance" was the secret to OtsAV’s success. This is the feature that keeps OtsAV DJ Pro 1
When a user converted an MP3 or WAV to .OTS, the software performed a complex analysis of the track. It didn't just store the audio; it stored:
Because the heavy lifting of analysis was done before the track was loaded, the program used very little CPU power during playback. This allowed OtsAV DJ Pro 1.90 to run smoothly on hardware that would choke modern DJ software. It allowed DJs to use laptops that were considered "underpowered" even by the standards of the day, yet still deliver a seamless performance.
For Mobile DJs: The stability is unmatched. On a decent laptop, OtsAV rarely crashes. For a wedding or corporate event where "blue screens of death" are not an option, OtsAV is a safety net. The automated volume management ensures that dinner music stays background-quiet, while dance tracks hit the speakers hard without the DJ touching the gain knob. If you still use a traditional DJ mixer (e
For Radio Stations: If you run an unattended station, the scheduling and automation capabilities allow for weeks of pre-programmed content. The cross-fade logic ensures a professional sound 24/7.
Unlike track‑based DJ software, OtsAV can play whole albums gaplessly like a media player and mix into the next album.
Great for radio shows, background music with occasional DJ drops.
| Area | Name | Purpose | |------|------|---------| | Top left | Decks A/B | Waveform, key, tempo, album art | | Bottom center | Playlist Panel | Drag songs, build cue list | | Right panel | Browser | Navigate your music folders | | Bottom | Crossfader & EQs | Mixing controls | | Top right | Key control & Pitch | Lock tempo, change musical key |
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