Just recently I re-discovered my n505.
I've only use it a couple of time since recieving it as a xmas gift when it first came out.
As discussed by 'mdfan', I would also like to record concerts i.e. my band only to discover no microphone input!
I followed the link below like you suggested for a battery box and microphone!
www.soundprofessionals.com and www.microphonemadness.com
It all went...... whossh.... splat..... over my head.
Any suggestions on whats what??? and what connects where?
Cheers
Lost Soul