Adding Sound > Compressing sounds for export > Using the MP3 compression option

The MP3 compression option lets you export sounds with MP3 compression. Use MP3 when you are exporting longer stream sounds such as music sound tracks.

To use MP3 compression:

1	In the Sound Properties dialog box, choose MP3 from the Compression menu.
2	For Bit Rate, select an option to determine the maximum bit rate of the sound produced by the MP3 encoder. Flash supports 8 kbps through 160 kbps CBR (constant bit rate). When you are exporting music, set the bit rate to 16 Kbps or higher for the best results.
3	For Preprocessing, select Convert Stereo to Mono to convert mixed stereo sounds to mono (monaural). (Mono sounds are unaffected by this option.)

Note: The Preprocessing option is available only if you select a bit rate of 20 Kbps or higher.

4	For Quality, select an option to determine the compression speed and sound quality:
	Fast yields faster compression but lower sound quality.
	Medium yields somewhat slower compression but higher sound quality.
	Slow yields the slowest compression and the highest sound quality.