Articulate Presenter includes a built-in tool for recording your narration (Articulate -> Record Narration). For best results, I recommend using this method since our software will optimize your audio for speech before converting to Flash.
In some cases, though, you may have existing audio that you’d like to import into your presentation. Articulate Presenter also supports this approach (one audio file per slide). We support both WAV and MP3 formats for importing, though we strongly recommend importing WAV files for best results (remember, our compression technology is designed for speech; the MP3 files you already have may not be).
I would even suggest decoding your MP3 files to WAV before importing via Articulate Presenter to your presentation. One tool for decoding your files is RazorLame. RazorLame requires Lame to be installed in the same folder as RazorLame.
If you do need to import your audio as MP3, you may sometimes notice after publishing that the audio doesn’t sound quite right (too fast or too slow). This is not due to a limitation of Articulate Presenter. Rather, it is because Flash only supports certain MP3 file settings. The chart below outlines supported formats: