If i encode some of my Cds into MP3s --alt-preset insane, should my mp3 player support it ( able to read it ? )

my mp3 player is a CD mps player so size doesn't matter to me....

I don't see why that wouldn't work. Lame presets don't violate the mp3 standard as far as I know.

Yes they should, however:
Some player do not support VBR or have a bitrate limit.
If the player has a bitrate limit I guess it could have trouble with --alt-preset insane.
However if the player doesn't support VBR or a bitrates (in the mp3 specs of course) it should be considered broken and not mp3 compatible and returned.

What bitrate and everything is alt preset insane anyway?

http://www.hydrogenaudio.org/forums/index....t=ST&f=15&t=203

Most of the mp3 CD portables that I know do come with a bitrate limit and it’s usually within the range of 8-320 Kbps. My Sony D-CJ01 supports MP3 bitrates from 16-320Kbps. So far I’ve played MP3s in –-ape & with no problem. This means that my portable supports VBR but I have yet to see how it does in –-api. I would imagine that if a portable supports up to the limit of 320 Kbps, --api should work unless during encoding it took a spike out of the limit. (I don’t know whether or not this is possible.)

No, it's not, unless you use the freeformat option (which would produce non-standard MP3s with higher bitrates than 320kbps). If your player supports up to 320kbps, it's not a "limit" at all.

I think so. Sometimes, people just want perfection without tweaking to death. I'm now using --alt preset extreme, to save space. Although why not allow --alt preset insane?