MP3 file size for MP3 players

Alright, I'm mad at myself.

I haven't added anything to my MP3 player for a few months and I forgot how
I was able to get most of my MP3 files down to about 2MB with 192 bitrate.
I was trying to delete some and add some, but all the MP3's I'm adding are
6MB+ and I can't get everything I want in there.

How do I convert these to get the file size down? I just don't remember
how I did it before! (yeah, I'm a dumbarse)

 

Erm I am pretty sure that you cannot get the size down very much more
than maybe 4-5Mb if you insist on the quality being 192.
Why not change the files to 128 or even 112 and also change the setting
in the convertor to 32,000Hz and Joint-Stereo. This is about as low as
I would go and, the 48,000 down to 32,000 doesn't make much size
difference at all on some files but it is worth a try.