Unfortunately, I cannot access or retrieve content from external URLs directly, including audio files from RSS feeds. However, I can help guide you on how to make blog content unbiased. Here are some general tips you can follow:

1. **Use Neutral Language**: Avoid emotionally charged words and phrases that could convey bias. Instead, opt for neutral terms that describe facts without judgment.

2. **Present Multiple Perspectives**: If the topic is controversial, ensure that you present various viewpoints fairly. This means including quotes or paraphrased opinions from people with differing perspectives.

3. **Cite Reliable Sources**: Use facts and data from credible sources to support your statements. This helps to provide a balanced view and reduces personal bias.

4. **Avoid Personal Opinions**: Keep personal opinions out of the writing unless the format allows for it, such as in an opinion piece. Focus instead on presenting information objectively.

5. **Use Passive Voice When Necessary**: Sometimes using passive voice can help depersonalize statements, which can contribute to a more neutral tone.

6. **Fact-Check**: Ensure that all information presented is accurate and up-to-date, as misinformation can lead to biased content.

7. **Review and Edit**: After writing, review the content for any biased language or assumptions. It can be helpful to have someone else read it to get an external perspective.

8. **Be Aware of Your Audience**: Tailor your language and content to ensure it is respectful and considers the diverse views of your audience.

If you can transcribe or summarize the content from the audio files, I’d be happy to help you further refine it for bias!