I have a pretty nasty bug I'm dealing with in CCCaster. It happens in 1.11 or in 2.0b.
The issue: More than half of the time when I quit MB after a set of matches (or even less than one game) against someone, my sound becomes bugged. It loops the same fraction of a second of audio again and again, and it sounds awful. It doesn't go away except after a reboot. Disabling / re-enabling devices doesn't work unless it the PC is rebooted.
I have a ASUS Xonar DG sound card with the latest drivers, and an onboard sound card based off of a common RealTek chips. It doesn't matter which device my sound is plugged into - both of them have the issue above.
It feels like there's something in the coding of CCCaster that doesn't gracefully stop the use of the sound device before quitting the MBAA.exe application. And closing CCCaster or MBAA's window can result in the same sound error that requires reboot. The only way to guarantee this doesn't happen is to not launch MBAA through CCCaster, which means no netplay
Let me know if you need any more information about my setup.