Yesterday Google released a Chromecast SDK and pretty quickly the developer of AllCast has updated the app to include Chromecasting support. With the updated Androi app you can stream content to a Chromecast dongle plugged in to your TV just as you can to a DLNA server. The update also improves metadata to DLNA devices, improved photo support and you now get better battery life using YouTube or Netflix is AllCast is running.
There is a trial version with a 60 seconds preview limit in the Google Play Store and the full version costs £3.05 as an in-app purchase.
Chromecast support! (Requires new Google Play Services 4.2.34)
Better song info when playing music on DLNA or Roku
Power/wake leak fixes
Better photo support for DLNA
Fix for duplicate device entries in list
Fix crash on start
Fix AllCast running and eating battery when YouTube or Netflix are in use