Modify the maximum memory allocated by editing /Applications/SongKong.app/Info.plist,
For example to set it to 4GB of memory
In Finder click on Applications:SongKong and select Show Package Contents
Select Contents folder, then right click on Info.plist and select with Open with TextEdit
Within TextEdit find this section
<key>JVMDefaultOptions</key>
<dict>
</dict>
and the add following section (to set to 4GB) within
<key>-Xmx</key>
<string>-Xmx4000M</string>
so end up with
<key>JVMDefaultOptions</key>
<dict>
<key>-Xmx</key>
<string>-Xmx4000M</string>
</dict>
Within TextEdit select Save