one of the best freeware :

I tried finding a lot on the internet for something which can grab things flowing out from my sound card onto the speakers without being saved on my hard disk , so here i found the solution for my worries ... and that too absolutely free

http://www.mp3mymp3.com/

download mp3mymp3 software , its interface is too easy for even an amateur like me to understand things very easily

so next time you listen to songs online radios , or things which lets you hear but not download ,,, here is the solution to it ... !