MP3 or AAC?

[Razor X]

Most of my music files are in the AAC format, but lately I've been buying a lot from Amazon that are all in the MP3 format.  I did a sound test and can't detect any quality difference one way or the other.   Since the AAC files are much smaller, I'm thinking of converting all my MP3 stuff from Amazon -- after backing it up on CD.  Does anyone have any thoughts as to any possible downsides of converting?  Everything I've read says that AAC is superior.

[Tyler]

AAC is superior in formating, but not in usage.  For example, I have a stereo in each of my cars that plays MP3, but not AAC.  Therefore, it's more advantageous for me to have it in an MP3 format.  It's also the same for almost any non-Apple device that I have in my house.  If I want to listen to my music on my home stereo without plugging in my Ipod, then I need to have it in MP3 format.

Though, if you plan on using your Ipod to play all of your music through any device, then just keep in AAC.

[Razor X]

AAC is superior in formating, but not in usage.  For example, I have a stereo in each of my cars that plays MP3, but not AAC.  Therefore, it's more advantageous for me to have it in an MP3 format.  It's also the same for almost any non-Apple device that I have in my house.  If I want to listen to my music on my home stereo without plugging in my Ipod, then I need to have it in MP3 format.

Though, if you plan on using your Ipod to play all of your music through any device, then just keep in AAC.

I have one portable CD player that won't play AAC; everything else will, including the 5-disk changer that I've had since 1990, which surprises me a bit.

[Cam]

AAC is superior in formating, but not in usage.  For example, I have a stereo in each of my cars that plays MP3, but not AAC.  Therefore, it's more advantageous for me to have it in an MP3 format.  It's also the same for almost any non-Apple device that I have in my house.  If I want to listen to my music on my home stereo without plugging in my Ipod, then I need to have it in MP3 format.

Though, if you plan on using your Ipod to play all of your music through any device, then just keep in AAC.

I have one portable CD player that won't play AAC; everything else will, including the 5-disk changer that I've had since 1990, which surprises me a bit.

You mean AAC on Data CD's or burnt audio CD's?

[Razor X]

AAC is superior in formating, but not in usage.  For example, I have a stereo in each of my cars that plays MP3, but not AAC.  Therefore, it's more advantageous for me to have it in an MP3 format.  It's also the same for almost any non-Apple device that I have in my house.  If I want to listen to my music on my home stereo without plugging in my Ipod, then I need to have it in MP3 format.

Though, if you plan on using your Ipod to play all of your music through any device, then just keep in AAC.

I have one portable CD player that won't play AAC; everything else will, including the 5-disk changer that I've had since 1990, which surprises me a bit.

You mean AAC on Data CD's or burnt audio CD's?

Burnt audio CDs.