audio technologies - the tools themselves

(first draft) .. okay, off the top of my head, the most useful tools (audio technologies) would be:

a portable mp3 recording gadget (eg dictaphone, iPod with attachment, iRiver, Samsung (?) .. iPhone etc)
a laptop, projector and speakers

audacity, the open source audio editor - a place to create interactive audiovisual stories
bubbleshare - another place to do the same thing - a place to build your own audio-enabled avatar

elluminate, live classroom and iVocalize are live conferencing softwares
skype is the internet telephone application of popular choice

alan levine's 50 ways to tell a story is perhaps the best single list of Digital Storytelling applications.