Linux-and-Virus Programs?

[Hart Larry]

Hi All:  Some of my linux experts have told me I don't need to have any
anti-virus programs.
Reason I am asking is that I am sharing files on Mutella in Linux.  While I was
looking for Christmas dance music, I ended up with a file, which is an
executeable.  I don't know its content, but I hope its music.  I would feel
much better if I could scan it while in Linux before I run it from Jaws in
win98.
Are their any suggestions or speech friendly Linux virus programs I can run
with speakup?
Much earlier this year I had alot of trouble with backdoor viruses in windows.
Thanks so much in advance
Hart