I have repacked the sounds into Quake PAK format for easier handling in ports like Mark V.
Dropbox link (zip, 34.2 MB):
https://www.dropbox.com/s/i430977tgjnmm9v/quake_hqsounds.zip?dl=0
How to use:
1) Unzip zipfile into your Quake dir
2) Rename the included pakx.pak files in id1/hipnotic/rogue subdirs for proper loading (e.g. if the last pak in your id1 subdir is named pak1.pak, rename pakx.pak to pak2.pak)
3) Load the game and enjoy