The command i'm using:
/playsound random.anvil_break @a 147 64 108 1.0 1.0 1.0

A /testfor command activates above command when the player is in a certain area. This sound can only be heard around the commandblock with this /playsound command. And completely ignores the coordinates...

Used these commands alot before and never had any problems with them. No idea what's going on here.