You can dump all songs/shorts in midi format, and dump all 2726 sound effects in wav format using this tool https://www.rune-server.org/runescap...77-format.html
You can also do this in 2 seconds with this https://www.rune-server.org/runescap...e-library.html
Songs/shorts are already in midi format in index 3 of the cache. To pack them, just gz the midi, or to get them in midi format just unzip them. Easy as that.