the author of this app says:
This audio player supports MPEG-4 and AAC as well as MP3 and WAV files. Mercury Hg3 can also play audio files from your iPod and audio CDs in your computer. It also supports Mac OS 9.
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Andy and Sean take a look at what audio and video codecs do, and show you how to troubleshoot your codec headaches.
Andy and Sean answer more questions from butterscotch.com's Ask site. Topics covered range from Bluetooth pairing to video codecs. Hilarity, as it often does with the Lab Rats, ensues.