This has been released:
InfraRecorder was originally posted by me a while ago, but T was kind enough to revisit it to get it up to snuff for official release, update the launcher and app, etc. It's a full featured CD and DVD burning app. From the dev test, there are a couple minor changes: official splash added, splash fade removed and time shortened.
Download InfraRecorder Portable 0.44.1 Pre-Release 3 [2.7MB download / 5.8MB installed]
As it's had a decent couple tests, it should be release worthy. Please test it out and post your feedback.
Updated to Pre-Release 2 fixing the registry issue mentioned below.
Pre-Release 3 correctly handles the registry for guest/limited accounts.