I've taken apart those battery pack a few times.. and thing is once you get it apart I dont think your going to get it to go back together perfectly.. the speaker is press fit into a housing at the bottom so its not easily accessible.. your best(only) option is evilbay because you just wont get it back together good enough I fear. I hope this helps.. also if you want to do a conversion (and you want sound) this issue should be addressed BEFORE you start spending extra money.