I think your title audio domain name is making no one look at it, I say it's worth mid $$ to low $$ undeveloped.
Here is why...
Many Audio domain names available - -$5
2 Words (at least it's better then 3) - +$5
audio-major key word +$5
bullet- so-so key word +$2.50
Connection of the 2 words
- Audio and Bullet, sound nice together but don't have a duel meaning. For example take my domain name, stateExams, (the double E hurts it [and I have the one without the double e] but...),the two words compliment each other for the purpose of the site. As it stands I'm guessing the purpose of your site is to sell audio songs? +$5
value
so I say rough value wise it's at lowest worth, $15-20, but you might be able to sell for mid $$. hope this helps.