I have already bougth the licence of the stems i need for my Numark Mixtream but when i tried to do my stems in engine dj it doesn´t work. First i tried to activate the function of stems in the settings but after it takes a time thinking it appears error 99 and that i haven´t got good wifi and that isn´t real because i hace prove it. I have tried all for making the steams but i can´t make it in my windows computer. If someone could help me i would be very happy.
Hi,
I’m not sure what error 99 refers to specifically, but stems are only compatible with certain file formats and sample rates. Please check your files against these:
Lossless formats:
- WAV (16–32 bit, 44.1–192 kHz)
- AIFF (16–32 bit, 44.1–192 kHz)
- FLAC, ALAC
Compressed formats:
- MP3 (32–320 kbit/s, VBR or CBR)
- M4A/AAC, MP4, OGG Vorbis
Stems Rendering Sample Rates:
- 11025, 44100, 48000, 88200, 96000 Hz
A very useful and free tool for checking this is mp3tag: add the columns Codec and Frequency to quickly verify your files. Highly recommended! 
If your files are compatible but the problem persists, please post your system specifications, your setup, and the exact step when the error appears.
It could also be a network or hardware issue that other users have encountered. Sharing this info makes it much easier to troubleshoot. I hope this helps! 
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