[grc] Converting file format question

[Frieda Werden]

I have received a batch of files in Opus format and have not been able to
open them in Audacity.  I see a number of sites that offer online
conversion of Opus to .wav and/or mp3.  But a few years ago I had an
experience where an online file converter I used successfully was later
hacked and downloaded a virus.  Does anyone have online or offline
solutions for doing this conversion?

Frieda Werden, Series Producer
WINGS: Women's International News Gathering Service www.wings.org