I tried converting some apps that would be handy for downloading music and converting id3 tags, and these were the best in my opinion.
Music Box Pro v2.1.1
Music Box Pro can be used to download music, it will all download to /sdcard/Music Box Pro/ so you will need to use another app such as Files and Folders to move the music into the music folder afterwards located at /accounts/1000/shared/music/
Pimp My Music
Pimp My Music is used to edit id3 tags, also an android app.
