I imported own sounds in my soundlibrary. It's perfectly possible to send these sounds in chat.
BUT what I actually want is to combine the sound with my own text, so that while displaying my text, you can hear the chosen sound.
This seems only possible for standard sounds . For example, I type " /sboring Woow, this is great! ", the line "Woow, this is great" appears, while you here the sound of "boring".
I want to be able to also do this with my own imported sounds!

Is there a command that can do this?

My versions: Windows 7 (6.1.7600) Windows Live Messenger 14.0.0726 Messenger Plus! Live 4.85.0.386

You can not mimic the build-in sounds exactly.
However, you can utelize Quick-Texts in order to send a sound and a text. But that sound will always behave like custom sounds (aka: the contact will always get that "user has send a sound" message).

See
Integrated Sound Creator ?
Sounds and Text
quicktekst
etc...

Okay I get it
Thanks!