NPR Audio Help for Macintosh OS X Users

If Quicktime is opening instead of the Real player, or if you get the message 'unsupported transport':

Un-associate QuickTime with the extension type .smil. Quicktime will not open these files. To un-associate it, open the QuickTime player, go to edit, then preferences, QuickTime preferences, Plug-In tab, Mime settings, expand "video", highlight "smil 1.0 File" , set to "do not use QuickTime." (If you have more than one version of SMIL or another version of SMIL, Repeat the same instructions for each instance of SMIL). Then instruct Real Player to open SMIL files. Open RealOne Player -> Preferences -> Media Types. Under SMIL, select "Always play with RealOne Player", and click OK. A window will pop up. Select "Configure", which will automatically close and configure your Web browser.

Make sure the file helper section of your Web browser associates .smil files with the Real player.

IE 5.1.6: select Edit / Preferences, In the left-hand window, click on the arrow next to "Receiving Files" (you may have to scroll down to see it). Then, click on "File Helpers." In the right-hand window, scroll down until you see "SMIL 2.0 file" (there may be more than one with a similar name, use the same instructions for anything with SMIL in it.) Click on one, then click on the "Change..." button. At the bottom of the w