uapmd
external fun uapmdImportAudioFile(h: Long, separatorId: String, filepath: String, outputDirectory: String, modelPath: String?, progress: Any?, outStrings: Array<String?>?, outCounts: IntArray): IntArray
Returns int2 {success, canceled}, fills outCounts with {warningCount, stemCount}, and lays outStrings out as {error, warnings..., (stemName, path, displayName)...}. Call once with a short array to learn the counts, then again with one sized to them.