[Source Media Arcade](http://www.moddb.com/mods/source-media-arcade/news/updated-with-built-in-dlc-system-bug-fixes-and-more "Source Media Arcade") is the 3D frontend I've been developing for launching movies, emulators, and games (built with the Source engine).
With this latest update, it now has a downloadable add-on content system built-in, which lets you download and install add-ons, such as new cabinet models or emulator definitions, with a single click.
Another noteworthy feature to make it into this update is random item selection. You can now specify if you want a completely random item, OR a random item of a specific TV show, movie series, group, etc.
Download the HL2 mod from: [http://www.smarcade.net/download.html](http://www.smarcade.net/download.html "Download Source Media Arcade v2.0b")
If you do not have a lot of experience with Source engine mods, I recommend you install with Desura.
If you just want to upgrade your 2.0 install to the current version, [click here](http://www.moddb.com/mods/source-media-arcade/downloads/update-patcher-version-20-to-20b "Update v2.0 to v2.0b").