From Hoo Technologies:
OGG MP3 Converter converts OGG to MP3 and MP3 to OGG. The software also resamples OGG files. OGG MP3 Converter supports to encode MP3 and OGG with different encoding parameters, such as sample frequency, bit rate and channels. This means it can convert a large-size MP3 or OGG file to a smaller-size file. The software supports to add or keep ID3 tag when converting files into MP3 or OGG, or resampling OGG. You can also change volume when converting or resampling. OGG MP3 Converter supports batch conversion. You can convert or resample a batch of OGG and MP3 files in a time.