how do i do it?

i have some music i want to add, and i've no idea how to go about doing it...:(

and if u post how to do it, then make it kinda easy to understand cause i'm a complete noob at this stuff.....

Use the worldspawn entity and type in for the key:

music

And for the value, type in the location of your music file in your base folder. For example:

music/yourmusicfile.wav

Remember to pack your music file (if it is a custom one) in your .pk3 file.

You could also use target_speaker for music (if you set it correctly).

If you're a noob at GTK Radiant (or JK2 Radiant... which barely, anyone uses) than you can go to this site:
http://richdiesal.jedioutcastmaps.com/tutorials/index.html

With a little bit of tweaking, you can easily change most of his stuff (from JK2 Radiant) to GTK Radiant.

Rich, is an excellent mapper, but he's been idle... and away. :p

You can also go to:
http://jediknight2.secondconflict.com/

Claxon's site is very limited, but you can often get through to him via by his e-mail. And he is very explanatory.

Hope I've helped if you needed those two sites.