I need to play a sound at a certain moment that is managed by a Lua script, but I dont know what is the best and hassle free method to do so.

I've heard that a direct command for playing a sound is broken having to spawn an emitter to play a sound is just gay.

I'd say spawning the emitter is easiest and least hassle-free. Nothing gay about it.

Gay isn't an insult, or any kind of negative term. Stop using it as such. That's no way for a developer to speak.

this isnt a perfect world, however right you may be.

nummy, just use an aemitter, lua is currently all about lazy hacks, making sounds is no different (sadly)

I still think it sucks, a simple statement like "PlaySound = "Filepath", but ah well. I used the emitter for some extra features to spew some particles to enhance the effect.

Btw, I´m a developer and I am cool.

as such you should ask data to give you a working playsound function as the current one fails.

Oh but I have already. 2 Fast 2 Furious 4 u.
No idea if he has fixed it yet, but its in his list afaik.

More like TLB has because he's the one who reports all the lua errors (and doesn't try to lord his status as a developer over the community somehow)

Sidestepping numgun's retarded comment:
The two best ways right now do play a sound through Lua are as follows:
1) Spawn an Emitter.
2) Spawn an invisible, instantly dying actor whose death sound is the desired sound file.

The biggest problem with sounds right now isn't how to make them play, but how they are affected by lag unlike music.
Only two ways to sidestep those problems I've found is to either use Lua to set ctrl+o when the sound plays and disable it when the sound ends, or to individually raise the pitch of each sound file so that when lag slows it down it sounds somewhat normal.

The former method is used in CTF Facing Worlds thanks to mail2345, the latter method I use with the Nurses. You can check each out to compare the execution.

The Emitter lags less I think. The Actor is good for a short sound like a beep but for a long sound loop like a steam exhaust or engine noise is best left for the AEmitter.
(this is my personal opinion founded from experience)