I love to riff with my teenage sons. I write smartphone apps. I only see support for Windows and Mac in the RiffTrax Player. I like the idea of a RiffTrax Recorder that would run on iOS, Android and WinPhone. Multiple smartphone users could connect such that their audio streams would be merged, with the option to go on the left or right channel. Syncing would be automatically configured. Uploading to the RiffStore (cloud storage) would be automatic, but could be configured to be turned off.

The app would allow you to browse the RiffStore based on the movie you select for playback. In app payments would be supported ala the Apple Store.

Have you got something like that, or do we need to launch a Kickstarter?