
Audacity is an open-source and cross-platform audio processer that allows you to free convert OGG to MP3 on Windows, Mac, and Linux. It is favored by many music producers with lots of advanced features in audio editing and processing, for example, cut/trim/split/ reverse audio, add sound effect and etc.
With Any Audio Converter, you can easily convert your video and audio files to MP3, AAC, WMA, OGG, Wave, M4A and FLAC just within three steps:

Free MP3 Converter for Mac manages to swiftly convert all audio formats, popular or rare, to MP3 for universal playback and other usages. It also convert MP3 to any target audio format you want. The supported audio formats include MP3, WMA, WAV, OGG, AAC, M4A, AC3, AU, APE, RA, AIFF, MP2, FLAC, ALAC, etc. A powerful video/audio converter, editor and player. This Free FLAC MP3 Converter helps you convert FLAC file to MP3 audio format with super fast converting speed. It can also convert TS, MTS, M2TS, TRP, TP, WMV, ASF, MKV, AVI, FLV, SWF, and F4V to MP4, MOV, M4V, and MP3, MP2 files. Thus it will be.

Click the 'Add Media Files' button to select audios and videos from your hard drive. You can also batch add files by clicking menu 'File --> Batch Add Media Files'. You can extract audio from YouTube by clicking the Download button and pasting the URL links of the online videos.
In the 'Output Format' window, click on the drop-down menu at the top and select 'MP3 Audio(*.mp3)'. All settings of the selected output format can be customized by you, as the picture below shows, you can customize audio bitrate, audio sample rate, audio channel. Click 'Settings' button in the bottom left of the program for more detailed settings.

Simply click the 'Convert' button to convert added or selected audio/video files to MP3 immediately. After the audio/video to MP3 conversion process is finished, click the Open Folder button in the bottom left of the program to open the output folder.
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As the undisputed leader in on-demand streaming music service, Both free and paid users can access over 70 million songs. But tracks have been applied Ogg Vorbis format in all songs and playlists, which prevents members listening to music on most popular devices, like the common MP3 players.
To make full use of songs, AudFree SpoDable for Windows and Mac is designed to help you easily convert Ogg to MP3, FLAC, AAC, WAV, M4A, M4B and other common audio formats with zero quality loss so that you can play tracks on all music players offline at any time.