By default flash files are disabled by SharePoint 2010. You can enable flash by following steps:
1. Navigate to central administration >
2. Application Management > Manage Web applications >
Then select your web application >
3. From top ribbon select > general settings > general settings>
4. Navigate to “Browser File Handling”
5. Select PermissiveDone
2. Application Management > Manage Web applications >
Then select your web application >
3. From top ribbon select > general settings > general settings>
4. Navigate to “Browser File Handling”
5. Select PermissiveDone
