Xilisoft Audio Converter is a discontinued Windows software application designed to convert audio files between various formats. It[SQ]s no longer actively developed or supported by its creator, meaning updates, bug fixes, and technical support are unavailable.

While it may still be found on some websites offering older software, using it carries risks :

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Security vulnerabilities:

Without updates, security flaws might exist that could compromise your system.
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Compatibility issues:

It may not work well with newer versions of Windows or audio codecs.
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Lack of support:

If you encounter problems, there[SQ]s no official support to help you resolve them.

Essentially, while it *was* an audio converter, it[SQ]s highly recommended to use a modern, actively maintained alternative for audio conversion needs. There are many free and paid options available that offer better security, compatibility, and support.