low sound issue

[Ripbox]

OK so.... making a track and adding custom music
I dont the usual convert to mono, export as .OGG
converted to .mux
Set up FTP n locators ect
The problem is that the music is far too quiet In-game... outside it all seems fine and as same as the normal stereo track but once in game the other sounds seem to overpower the music track
(i feear some noob is goon to say turn down the FX, Sigh!!)
So if out of the game the music is a normal volume, why when i place it as in-game Music for my track is it barley heard?
Anything iv done wrong? we should still convert to mono ect ect right?

Edit: why is the game not finding.mux as music?
Edit 2: so iv found that if i go in the editor select custom music... look for a .ogg and select it the editor imports the .ogg and turns it into a .mux but it still doesn't explain the low volume though, this time i didnt convert the ogg to mono but it still seems to be lower than the default music.... ill keep playing around a little