nautilus open .mod

[Bjørge Solli <bjorge solli gmail com>]

System: Fedora 7 x86, Gnome 2.18.3.

Please let me know if this Q is more suited for a fedora list.

when opening the attached ASCII-file, prod.mod, nautilus complains:
---
The filename "prod.mod" indicates that this file is of type "Amiga 
SoundTracker audio". The contents of the file indicate that the file is 
of type "plain text document". If you open this file, the file might 
present a security risk to your system.

Do not open the file unless you created the file yourself, or received 
the file from a trusted source. To open the file, rename the file to the 
correct extension for "plain text document", then open the file 
normally. Alternatively, use the Open With menu to choose a specific 
application for the file.
---

Even if I use Properties, Open with, and selects a text editor as 
default it still won't open if I double click it.

Any ideas?

Regards
Bjørge