I agree with first you should "read you manual". This is not rocket science here.
Yes it is actually given the posts. See more below.
You could also do an internet search. You could find the general most likely answer in a short length of time.
http://ezinearticles.com/?Car-Audio...-Part-1---Understanding-File-Types&id=3391762
"Most car stereos these days are MP3 compatible, but fewer can play WMA files without conversion and AAC compatible stereos are in the minority. Therefore, if you are not sure whether your car audio equipment is WMA or AAC compatible, it might be best just to convert all audio files to MP3 to avoid problems."
"Most sites and shops that sell car audio equipment give a run-down of the file types that every stereo supports."
Did you do any checking to see if said blogger knows which end is up? She says this in the article:
"The stereo you have in your vehicle might well not be able to play AAC files, or even WMA. If your car contains a Panasonic CX-DH801N, for example, you would need to convert any WMA files to MP3 before it would be able to play them. "
The CX-DH801 is a DVD changer, not a head unit. A quick look at the said manual that you said folks should read says this:
Kind of hard to miss the mention of WMA right next to MP3. Panasonic was the first company to broadly license WMA. I know because I had to negotiate the deal at executive level with my peer at the time, Mr. Tsuga who ran the Audio/Video group. Mr. Tsuga is now President and CEO of Panasonic.
http://en.wikipedia.org/wiki/Kazuhiro_Tsuga
And who is Ms. Rachel Lawrence who wrote that article of yours that you trusted? If you click on her name, you see this amazing set of articles she has written:
Recent Articles By Rachel Lawrence
Heuga Carpet Tiles for Your Bedroom
Home Improvement: Flooring • Published: November 2, 2011
Commercial Carpet Tiles For Your Dream Home
Home Improvement: Flooring • Published: October 20, 2011
Buying Commercial Carpet Tiles
Home Improvement: Flooring • Published: September 7, 2011
Hotel and Hospitality Carpet Tiles
Home Improvement: Interior Design and Decorating • Published: August 31, 2011
Christmas Parties - Book Early For the Best Event
Home and Family: Parties • Published: March 4, 2010
Van Hire - Keeping Your Cargo Safe
Automotive: Vans • Published: March 4, 2010"
And fifty more mentions like that. Her personal web page points to.... website keyword marketing in UK!
Here is the way that scam works. These companies go to small businesses, promise them in exchange for money to plant "articles" online as to improve search engine "organic" rankings (the list that shows up without paying for advertisement). Of course search engines have heuristics to detect such stunts and ignore these results. The work-around is to create fictitious "authors" like this, write "articles" for online places that publish anything, and with it, create a persona of a real person so that when the clear advertising "articles" show up, they won't be rejected by search engines. Hence the reason you saw that page. Of course the author link connects to the marketing web site and therefore, increases their ranking too.
You want to believe your methods of looking up such information, by all means do. Just don't waste our time with it please....