Rip audio to an independent file

i have found some funny flash online, but the music in it is more magnetic, so if i can rip the audio
to an in dependent file and save it in my iPod to enjoy anytime. i have tried many programs, but
no one can satisfy me, the effect is not as good as original, until i found SWF to video Covnerter, it adopts audio-extracting technology instead of recording, so i can get perfect effect
Is there any other method to keep the original effect of audio when ripping?