You can now turn your Windows Phone 8 into a remote control for the Roku.  The Remote For Roku app allows you to do just that! remote control roku windows phone 8

The highest-rated remote control for your Roku™ device.  Never worry about losing your Roku remote again!  Remote For Roku is a quick, clean, simple remote control for your Roku™ streaming media player. roku 3 hard reset factory New in 8.2:  - No more ads - use in-app purchase to banish advertisements for ever more!  - Performance improvements  - Dismiss keyboard using the Back button New in 8.1: - Added new touch skin - tap 'change skin' to see it in action! - Choice of skin is saved when app closes - Don't allow settings to be changed when app is in Kid's Corner - Removed vibration of OK button  New in 8.0: - First release for Windows Phone 8, hugely popular on Windows Phone 7 - The best Remote For Roku just got better - Faster launch, faster resume - Multi-resolution support - Simple setup through Find My Roku - View list of your channels - Pin channels to Start and tap to launch