Though, Windows 7 comes bundled with a built-in CD/DVD burner that can burn IMG and ISO files, it is pretty basic. One of the better alternatives to a tool like Nero is a free and unglamorous piece of software called CDBurnerXP.
CDBurnerXP (ver.4.3.8) made its mark in the days of Windows XP when users cried out for a simple no frills CD/DVD burning software. “No frills” is an understatement because, the software gives you all the features to handle your day-to-day burning tasks.
Supported video files: CDBurnerXP supports burning on CD-R, CD-RW, DVD-R, DVD-RW, DVD+R, DVD+RW, Blu-ray Disc and HD DVD. It can also handle dual layer recording in double layer DVDs, Blu-Ray and HD-DVDs.
Supported audio files: CDBurnerXP supports MP3, WAV, OGG, FLAC, WMA, APE, MPC, WV (WavPack), and Ogg Vorbis. The software also has an integrated audio player. Mixed mode CDs that combine both audio and data for devices like PCs is supported.
Burn media on the fly: You can burn all files on-the-fly. That basically means you can write to your recordable disc directly from any other source other than your HDD. This is an essential feature of most good CD/DVD authoring tools. It’s a time-saver especially when you need to quickly create audio compilations from a multiple source CDs without ripping them.