If you're a barbarian skald can you use your barbarian bonuses for yourself for your song?
yes you can
If you mean rage bonuses, Raging song is a charisma based ability and as such can't be used while raging.
While using your raging song you normally get +2's if you have a level of barbarian you can use it's +4's instead of your +2's.
If you mean rage bonuses, Raging song is a charisma based ability and as such can't be used while raging.
How do you figure that Raging song is a charisma based ability? If your answer is that your number of available rounds is modified by your cha mod, I will ask if all skills are int based, since your number of skill ranks is modified by int mod.
My reasoning was that the number of rounds is modified by your CHA.
And all skills are not int based obviously. Your intelligence controls how quickly you can learn, how well you do something however is based on the appropriate ability modifier. The two aren't really related.