Along with bit rate {96,128,256 ETC.} there is also layer single, double, triple, ETC.
Let me ask you this:
Is it a C.D. .mp3 player or does it have a hard drive device?
{physical hard drive or a sims card of some sort}
There are several different .mp3 encoders. Your particular player may use only one of these encoders there fore you will have to use the software that came with the player to convert the encoding method on any .mp3`s that you upload from your computer to the device.
MOST {Not all} .mp3 players will play almost all of the encoding methods, However there are a couple of encoders out there that will only play in certain players. Totaly confused now? {I was} The best thing to do is read ALL of the documentation that came with your player. It should tell you how to encode and upload the PROPER encoded .mp3`s for that particular player. Some players will even allow you to keep .mp3`s in folders {In other words you could put all of one artist in one folder and another in a seperate folder. Other players do not have this capability and the .mp3`s must be all exposed on the drive device IE. cd rom, sims card, or physical hard drive.
In any case I would bet my last dollar your problem lies within the encoding method used to "Crunch" the files.
But rate has to do with the quality of the music and the size of the file and should not have an affect weather it will play on any particular player or not.
P.S. I have over 30,000 .mp3`s and my player is an in dash cd rom style player. It can play from individual folders as well as exposed files and will play any bitrate. However I have encountered one or two encoding methods that it will not read.
BTW one cd rom will hold { depending on the files size} well over 225 and up to up to 275 tunes. I commonly rip my .mp3`s at 128 bit rate {small enough file size and good enough quality for listening to in the car/truck.
I have the most popular encoder software for "Ripping" from .wma, .cd, 0r .wav files. P.M. or email me And I will discuss the subject matter further if you wish.
Kerry