unless..i foundt "computer" but dont see psp

i have 5 removable diks it reads like this

removeable disk(f) removeable disk(g)
removeable disk(H) removeable disk(i)
memory stick(j) my sharing folders


how ive been doing it..was clicking memory stick..and dropping my music to it..so the music is on my memory stick...just..wont appear on my psp