this worked for me...and now firefox and google chrome able to play from subsonic... wonderful!!
Uninstall any currently installed Flash Player before installing the real 64 bit version.
yum remove flash-plugin nspluginwrapper*
Download Adobe Flash Player “Square” 10.2 preview 3 x86_64 version here
## Current version download ##
cd /tmp
wget
http://download.macromedia.com/pub/labs ... 710.tar.gz
Untar and unzip downloaded package
tar -xzvf flashplayer10_2_p3_64bit_linux_111710.tar.gz
Move plugins to /usr/lib64/mozilla/plugins/ or ~/.mozilla/plugins/ directory.
mv /tmp/libflashplayer.so /usr/lib64/mozilla/plugins/
## OR ##
mv /tmp/libflashplayer.so ~/.mozilla/plugins/