Is there any way to listen live to the mumble conversation with just a smart phone?
Yes there are a couple of clients. Go to playstore. I know TonyK has a mumble client on his phone and it works quite well. Brent Allsop also uses his phone I believe. I have one but I don't use it so I can't speak from experience.
Plumble is the best app out right now. There is a free version and a donator's version.
Thanks guys.