Index: javascript/plugins/media.library.js
=========================================================
--- javascript/plugins/media.library.js	(revision 1.9)
+++ javascript/plugins/media.library.js	Thu Oct 21 14:16:28 EDT 2010
@@ -41,8 +41,10 @@
 Drupal.media.browser.library.prototype.start = function (renderElement, params) {
   this.renderElement = renderElement;
   this.params = params;
-  // Change the behavior dependent on multiselect
-  if (params.multiselect) {
+  // Change the behavior dependent on multiselect.  The parameter reaches this
+  // point as a string so we check to see if it is true, and disable multiselect
+  // if it is not.
+  if (params.multiselect == "true") {
     this.clickFunction = this.multiSelect;
   } else {
     this.clickFunction = this.singleSelect;