Does anyone know some cool sounding jazz music for alto sax?

yeah sure, but i don`t no what u mean if u want the music for it or not. well, ne ways..... gr8 jazz music are:
dave brubeck quartet - take five / castillan drums
charles mingus - pithecanthropus erectus (it is a song!)/boogie stop shuffle / better git it in your soul

yeah, tatinic, lonestar,roman festive,drum and bugle,sand in my shoes,SOUL ROCK!!!!

Go to

http://www.aebersold.com/

They have jazz play-along music of some of the greatest jazz pieces.

good saxophone jazz music, im diggin on dave koz right now the guy is sweet he is stuff is really kinda modern jazzz but his songs are great try downloading ummm honey dipped and say flat feet those are really good pieces just download the audio and listen the guy is my god

i`d suggest going to your local music store and asking about a Jim Snidero music book for alto. it comes w/ a cd. it might be too easy for you tho. i`d suggest that book for seventh, eighth, or ninth graders.