Hmm... go
here. That's Keiichi Anime Forever, a good site to find some anime songs. I linked you straight to the Inuyasha mp3s. You dont have to sign up, or pay for anything. Although there is basically a 'line'. You have to click on the song you want; at that point usually you will got to a page that says:
Simultaneous Downloads Limit Reached
We have received too many download requests from your IP/host. You may download only one file from our server at a time.
For more information, please read the OST download FAQ.
Just know this. That is the line basically. Just go back, and click the song again. Keep doing this until a pop up appears that allows you to download it in zip format. Once downloaded, open the zipped file with the song, and extract it to your music folder.
Also, try out www(dot)gendou(dot)com
You might be wondering why I did the (dot) thing. Well you see, gendou does not allow hotlinking. It is a
big problem to them.. I once got in trouble just for quoting someone who hotlinked them... so, just know that:
(dot)= .
Gendou, is an amazing archive of anime music. All you have to do is register for free, and over a 1000 songs can be yours. Just enter a anime in the search feature, and click on one song from the list that shows up to listen. To download, right click and select 'Save as...' There is no wait, there is no zipped files. It is saved directly wherever you want it to be. Be careful though, as I have said, they're very strict about hotlinking.
DO NOT. I repeat, do not hotlink, under any circumstance, or you will be banned from there.
The reason I mentioned Keiichi Anime Forever first, is because they dont have any songs from Inuyasha. Its some legal problems. So use gendou for any other anime.
Hope I was of some help.