Can you put your custom music into LFS? for example could i take my music from iTunes and somehow put it into LFS so i can listen to it?

LFS Manual:
http://en.lfsmanual.net/wiki/Options#Audio

Quote :

Channels:
Using this button you will enter the interface for playlist creation and editing. Channel 1 is the standard for all setup screens and can not be deleted. You can add, rename and delete playlist on the left of the screen. On the right you can add tracks assign a song to each track and delete tracks. To ensure that a track will be played back you have to its priority with 3 being the highest priority, 1 the lowest priority and – the setting to prevent a track from being played. The higher the priority of a song the more likely it is that it is being played back. This means that if you have two song of the same priority you will hear both song equally often but if the one song has a priority of 3 and the other a priority of 1 you will hear the first song much more frequently.

TIP: The music files of LFS are in OGG Vorbis format. You can create your own music files using a freeware encoder available at www.vorbis.com or using Audacity. To play the songs back within LFS they have to be in the ..\Data\Ogg directory.

Quote from three_jump :

LFS Manual:
http://en.lfsmanual.net/wiki/Options#Audio

ok thx i'll be doing that soon one more quistion could i take a song and change it to the format the HORNS use and drive around honking my HORN that is playing a song? lol that would be funny

In theory, but if you changed the sound on your PC, remember that it'd play any time someone else on the track hit the horn too. So you could end up with several versions of the track playing at once. It's not like it'd only play while you held it down

It's also possible that the larger the file you add, the more it'll make your system stutter when it loads it.

Quote from swisscosmo :

ok thx i'll be doing that soon one more quistion could i take a song and change it to the format the HORNS use and drive around honking my HORN that is playing a song? lol that would be funny

You can but as long as it is in your PC only, you will be the only one hearing that song. Others will just hear the regular honk. It is the same as with skins.

ok thx all and there is no way of uploading HORNs to LFS World like skins right?

Right

ok thx