I'd suggest a thread title that tells us what you need help with. Almost every post is asking for help, and 'help please', while it is polite, just doesn't stand out in the crowd. I hope that helps. As to lowering the bitrate, I wouldn't if I were you because resampled MP3 sounds bad. Rerip the originals if you can or live with fewer songs if you don't have the originals.
or you can lower the file size by changing its format to .wma "windows media audio" and it will decrease the file size 20% more, also it doesn't change the bit rate so you don't have to worry by the sound. Almost all cd player from now can play .wma format.
sorry i am new on this, i try using switch and nothing , i dont know how some people. they can put alot of song in a single cd of 700 mb. anyway thank you for you help