I think there would be great if there was a function to drag & drop samples into the instrument box from an outside source other than Renoise built-in disk browser
Like in my case, i use AudioFinder from Iced Audio (Iced Audio site) to keep my ever increasing sample archive organized. And this is my main tool to browse and preview samples to use. But the problem comes when i find a sample I want to use, i have to scroll and select the sample in Renoise disk browser to open it. while it would have been much easier if i could just drag the sample from AudioFinder directly.
AudioFinder is for Mac OS X only, but i guess there are similar tools for the Windows platform