Sound in KMail

[scsitwo at tfz.net]

I am new to Linux and have KMail 1.4 in KDE 3.0.0 on SuSe 8.0. I note in the 
KMail Network/Receiving settings that I can select various things to happen 
when I receive mail such as notification via the system beep, etc. Well, I 
have a wav file I wish to play. Most mail clients in other OS's allow you to 
select the default sound or browse for a different sound. I see that KMail 
asks for a command line rather than simply a file name to execute a sound. 
So...lets say I have /stuff/garbage.wav and I want it to play when a message 
arrives (embedded rather than having an app pop up to play it). What is linux 
looking for to execute something to play /stuff/garbage.wav in an embedded 
manner?