> Do any audio file formats support separate tracks with level info? There is a 4-track an audio format developed by Native Instruments that is mostly used by

> Do any audio file formats support separate tracks with level info? There is a 4-track an audio format developed by Native Instruments that is mostly used by DJs, and only dance music gets released in that. However, now that I search their website, there's no mention of it anymore — guess it wasn't popular enough with the labels to get any traction.