Again I’ve been browsing the interwebs and this time I’ve come across the Sonatina Symphonic Orchestra, which is a free CC-licensed orchestral sample library.
The download is ~440Mb and contains 57 instruments in SFZ format (12 brass, 3 chorus, 1 harp, 1 piano, 10 percussion, 16 strings and 14 wind instruments). These can be imported into Renoise instruments with the FileFormat tool (disclaimer: I wrote that tool).
I’ve noticed that the tool fails to correctly reference the sample files on some of the patches (which I’m currently now looking into). For these, convert the relative sample references in the SFZ file (which is a text file) as so:
samples\bass trombone\bass_trombone-* -> bass_trombone-*
This can be done with a find and replace in any text editor. The tool will then ask you for where the samples are, and you can then point to the correct folder and everything will then work.
Note that I cannot find any loop points set for any sustained instruments.
Finally, you will need to set up the instruments volume envelope after importing ot avoid abruptly terminating notes when they are released as it sounds unnatural.