Audio Merge Expert is able to merge separate audio files into one big file without quality loss. It allows you to input audio files of the same/different formats and everything will be done in a split second.
If you want to convert your WAV,WMA 9 or OGG files to MP3 format, this program is exactly what you are looking for. You can start conversion directly from Explorer by right-clicking on selected files and selecting "Convert to MP3" from context menu.
Fast Audio Converter supports the most popular audio files formats; supports batch conversion, the best audio codecs and ID3 Tag v2. Handy user's interface and a fast conversion speed guarantee the best results even for the non-experienced users.
Audiozilla is complete audio converter software that works via a right-click. Just right-click any audio files on Windows Explorer, Audiozilla can immediately convert audio MP3, WAV, AC3, OGG, WMA, FLAC, AAC, M4A, APE, VOX, VOC, AIFF.