Would be great if we could choose the default double-click behavior for an object in the Mezzmo library detail pane. Currently, double-click opens properties (same as right-click -> Properties), but sometimes I want double-click to Open/Play the file. I understand Play is normally meant to occur on a media device other than the PC, but while going through the process of previewing, categorizing and rating, I need to sample files at the PC. Other times the current default may be more appropriate (to work mainly on file properties). Just a small convenience that makes a big difference when working with lots of files.