The short answer
Add your MP3 files, select the OGG/Vorbis profile and convert to a separate folder. OGG is a container; use the codec required by the destination rather than simply renaming an MP3 to .ogg.
Check whether the destination requires Vorbis
An OGG container can carry different audio codecs. The common OGG output profile here uses Vorbis. Check that your player or project expects OGG Vorbis; an instruction asking for a different codec is a different output requirement.
Add the MP3 files and select OGG
Choose Add audio, review the queue and select OGG in the Audio output profiles. Open Audio settings to review the available quality controls. Keep the source sample rate and channel layout unless the destination specifies a change.
MP3 and Vorbis are lossy codecs. This conversion creates another encode and cannot recover lost MP3 detail. When you have a better lossless source, consider converting from that original instead.
Save and test the actual OGG output
Choose Save to, keep Merge files off for individual outputs and click Convert. Open an output in the target player or import it into the project that requested OGG. Confirm its duration and sound before converting a large collection.
If you only need a common listening file, compare the outputs in the audio format guide rather than repeatedly converting between formats.
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Free MP3 WMA OGG Converter is free for its supported features. No subscription or paid activation is required.
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