The link to download dxtn.dll for Amigamerlin driver 3.1 R11 for voodoo5 5500 is broken.
https://www.3dfxzone.it/news/reader.php?objid=1202
More specifically, this link: http://3dfx.rule.lv/downloads/drivers/dxtn.rar
Thanks
Looks like the wayback machine caught it.
http://replay.waybackmachine.org/20060713042139/http://3dfx.rule.lv/downloads/drivers/dxtn_11102005.rar
Many thanks for both broken link's notification and help by Internet Archive.
However, all those who need a copy of that file may grab here (https://www.3dfxzone.it/public/uploaded/Glide/20113121076_dxtn.zip) too.
Bye bye