Excursion Funnel/Tractor Beam Sound
The Tractor Beam in Hammer only plays the "Standard" sound when im in the Beam...
Do you know what i mean?
Need help
If it's not that channel, then I think you'll need to use sound stacks to achieve this. Find out what sound is playing in the level you're talking about, and see how it's done there.
Where everything is quiet and you only hear the music of the Tractor Beam.
In Hammer you hear only a "Clicking" sound.. :/
EDIT: I search an video to show what i mean.
I mean this Music when He is in the Tractor Beam.
And now make a Tractor Beam in hammer, when you play the Level you Didnt hear this sound.
THAT is what i mean 
That high chimey music that is being played whilst he is sitting there? I believe those are level specific. I did some digging on the matter, but for lighting bridges. I imagine it works the same. I'll paste my notes on it below. Be warned they are sloppy.
Quote:
**
Changing/adding a sound that emits from a light bridge**
This could possible work with lasers, and gravity beams as well. Probably just the naming scheme.
Source soundscript: scripts\game_sounds_music_a2.txt Line:1888
Simply change: "music.sp_a2_bridge_the_gap_lbout"
to: "music.[name name]_lbout**" There are other params that you can use to modify the sound. Such as radius and fade times, mess with these when you go to implement this.
*DO THIS***: Look up what sounds play from lasers and gravity beams (snd_show 1). There are certain maps where they emit different music, find those levels then search for sounds in the scripts.
Okay, when i know how it works
But one thing, when i make an PTI Level, i hear the Melody also.
How does it work on PTI Maps? I mean i cannot find a script who changes the TBeam Sound of a PTI Level, if you know what i mean..
(Hoouuhh i should learn more English...)