It seems renoise doesn’t support chunk data of wave files. I have a many “ready to use” samples, where the root note is already set. It would be nice, when renoise would parse and use this info when i’m loading these kind of samples.
There are many types of wave-files that use the .wav extension than just the ordinary “microsoft” format. If you contain a few that are not loaded or interpreted correctly, you are invited to send these examples to (i guess you get the hint) support at renoise dot com.