If you are looking for a small, simple, fast and free CD, DVD and Blue-Ray burning solution JetBee would be the best solution currently available, I have written about Free Nero Alternative before but this one is far better then any other free CD/DVD burner out there.
JetBee is pretty small with installer sized only 1.59 MB and application just 658 KB, the application launches almost instantly and you simply need to Drag-N-Drop files and Click the Burn button to start the burning process, the application then minimize to the system tray so you can work on other things unobtrusively, this is by far the most easiest and fast approach you can get in a CD/DVD/Blue-Ray burner application, JetBee allows creation of Audio-CD, DVD Video and UDF discs with full support for creation of multi-session and bootable media featuring buffer underrun protection, test writing, and optimal power calibration.