Gmod won't play my sound

I’m make an entity that play a random sound when you use it, when I use it I see that Gmod can’t play it

Failed to load sound "bms_radio\bms08.mp3", file probably missing from disk/repository

The sound is in the right folder but it won’t work.

the problem might be that the mp3 needs to be at a certain bit rate or something to work (not entirely sure though)

Are you really sure that subfolder bms_radio does exist in ‘sound’ directory? Maybe it does not exist causing this error message to appear in game’s console.

I don’t think there is something wrong with the bitrate cause the bitrate error has it’s own error message and the sound was originally created for a source game.

[editline]5th June 2013[/editline]

Problem solved, accidentally added an s to the sound folder.