Probably its not everyone thats have file type.wav on their pc's

On :dialog:om:sclick:35:{ reghelp | splay type.wav }
On :dialog:om:sclick:25:{ requesthelp | splay type.wav }
On *:dialog:om:sclick:13:{ warninghelp | splay type.wav }

[19:05:38] <_Teen_> WARNING Please alter your posts, scat/watersports are not permited on server
[19:05:39] is not on IRC.
[19:05:39] 1 is not on IRC.
[19:05:39] is not on IRC.
[19:05:39] 1 is not on IRC.

you forgot to say, that needs to specify a nick, if not will return a error message...

and then, you forgot, how ppl will open the dialog? by the way try this

menu * {
  OM: dialog $iif($dialog(OM), -v, -m OM) OM
}