If a audio Program with playing and recording at once works until the same
record device is opened a second time. The playing device works but the
recording device not.
In audio/mumble the device could be opened second time if just open Preferences
change some things and push the apply or OK button.
I know i write that bug in "Ports & Packages" but i believe it has nothing to
do with that packages and it is a Sound-server bug. I use audio/mumble heavily
and i did discovered that audio/audacity has the same bug so that's why i think
its a Sound-Server (OSS) bug.
I got to workaround that issue with using audio/jack & audio/qjackctl. That way
the bug is pushed away to jack so that jack got the problem and not the used
program in that case audio/mumble or others. I know that the audio program has
to support jack but it works that way for me. Jack has some nice routing
audio/jack support in FreeBSD seems to be disabled by default in other ports so
it has to be enabled while building the port.