When I encode wave using Nero, I get files with the extension M4A

Using Nencode, the file extension is MP4

Fundamentally, I dont understand this.
I become even more confused when attempting to Tag these files (MP3Tag with aac add on) as the Nero Files tag without difficulty but the nencode files wont with the message "No MPEG Header found in file" appearing.

I find this stuff rather confusing and as I am getting old (actually I am old!!) "please be gentle."

Thanks,
auldyin

Dunno about your tagging issue, but there's no fundamental difference. Rename the MP4's to M4A's and it'll generally work fine.

Thanks for help.
Unfortunately I don't know how to rename an extension (Unless its as simple as right click, rename??)

auldyin

click F2 is faster

Unless Windows is set to hide the extensions.

Understand the extensions bit now.....they were hidden but I remembered being in Tools, Folder Options some time ago.

Thanks.

Will now try to figure out the tagging issue.

A related question here - are the extensions
.mp4 and .m4a and .aac all equivalent? Or is .aac different from the first two?

.mp4 and .m4a are the same, .mp4 might also contain video data where .m4a shouldn't

.acc is raw AAC, .m4a contains AAC within a container (.m4a can also contain different audio types, but generally it is AAC).

I prefer the M4A extension, because a) it makes clear that there is no video stream inside and b) iTunes doesn't want to tag files with MP4 extension (iTunes plays them just fine, tough).

Don't you mean .m4a is the container (as is MP4)?