If you are experiencing any audio issues with audio you have imported there are several things you can do to make sure that your audio plays correctly.
If you are importing audio we recommend using 16 bit 44 KHZ PCM WAV files for best results. If your WAV file does not meet these guidelines you can convert your wav file using a free audio editing tool. You can also use iTunes as shown in the below screencast.
If you are importing MP3 files you should make sure that you are using flash-supported MP3 files. If you are experiencing unexpected issues with your MP3 file and it is flash-supported try converting the MP3 file to a 16 bit 44 KHZ PCM WAV file and then import the file again.