An audio only version of JRiver Media Center for Mac was released on February 22, 2013. You can learn more by visiting the Mac board here: https://yabb.jriver.com/interact/index.php
Airplay is reported to work with the Mac version.
JRiver Media Center can also be run under Parallels and Wine:
Making folders visible: http://yabb.jriver.com/interact/index.php?topic=79102.0
Where are Mac crash reports found:
You can find Mac crash reports in the ~/Library/Logs/DiagnosticReports/ folder. Here's a helpful link in case you have trouble finding the crash report (the "Library" folder is hidden on newer Mac OS's): http://serato.com/scratchlive/support/6600/how-to-get-a-crash-log-in-mac-osx Attach these to an email addressed to logs at jriver dot com.
Where are files located? http://yabb.jriver.com/interact/index.php?topic=78996.0