This article describes three trouble shooting ideas to get the Mathcasts to play.
1. Firefox: Copy the link from the error page. Paste it in the browser. Check to see if it plays.
![Firefox: Copy the link from the error page. Paste it in the browser. Check to see if it plays.](https://media.screensteps.com/image_assets/assets/004/742/405/original/8e7cee41-371a-4e9e-a5aa-1925946bd0c0.png)
2. Still not working? Download the latest version of Quicktime. In Firefox:
- Go to Tools --> Add-ons.
- Under Plugins, get Quicktime Plug-In 7.7.4 (or the latest version).
- Activate.
- Repeat step 1 if necessary.
![Still not working? Download the latest version of Quicktime. In Firefox:](https://media.screensteps.com/image_assets/assets/004/742/407/original/0241643f-0de0-4626-9a05-330c5878b9e4.png)
3. If step 1 and 2 above did not work, open the link in iTunes. Open iTunes:
- Go to File -->Open Stream.
- Paste the URL in the Open Stream window.
- Play the mathcast!
![If step 1 and 2 above did not work, open the link in iTunes. Open iTunes:](https://media.screensteps.com/image_assets/assets/004/742/410/original/5a6f5b1e-27a8-4d5a-a6e6-7df8c4b0034e.png)