The Nook supports a wide range of e-book formats, including ePub, BBeB, Adobe PDF, XLS, DOC, PPT, PPS, TXT, DOCM, XLSM, PPTM, PPSX, PPSM, DOCX, XLSX, PPTX, JPG, GIF, PNG, BMP, MP3, AAC and MP4 formats.
Podcasts are usually in a file format such as MP3, AIFF, or AAC - it really doesn't matter that much, as most computers can play a variety of file types.
However, if you're accustomed to an iPod and purchase songs on iTunes, the format that is used by Apple is actually AAC or Advanced Audio Coding.
AAC and WMA files may be smaller in size (without losing any quality), allowing you to store more songs in the same size memory card.
Sound Files - There are many different file types - WAV, MP4, AIF, AAC - but by far the most common for podcasts is the MP3 files.
This would make the downloadable file (MP3, .OGG, .AAC, .WAV) the users' responsibility to figure out how to play.
In order to burn iTunes using Nero, you would have to first convert the AAC files to another format, usually MP3.
However, an MP3 burn will not include AAC files because they are generally unplayable on portable MP3 players.
Windows Media Player works best with files of the following formats: MP3, WMA, AAC.
The ability to play a variety of media files, including MP3, WMA and AAC.