There are many ways to refer to the group of people you're addressing. Here are some alternatives to "audience" that you can use:
• Participants – invoking their active role in the situation
• Listeners – highlighting their role of hearing what you have to say
• Friends – emphasizing the closeness of the group
• Colleagues – signifying a partnership with those present
• Folks – offering a more casual and friendly introduction
• Fellow (insert profession) – linking the group to a particular field
• Ladies and gentlemen – a traditional and respectful way to address a crowd
• Peers – emphasizing their common experiences
• Community – solidifying a bond between yourself and those present
Whichever term you choose, be sure it's one that accurately and respectfully conveys the relationship between you and your listeners.