use search algorithm of javascript version

[soulfx]

would like to modify song matching code to use logic of javascript so that it doesn't take as long to import songs, more songs are matched, and matches are more accurate.

acceptance criteria

1. verify songs import quicker given a list of songs that previously didn't match very well...
2. verify more songs are matched
3. verify songs are more accurately matched

development notes

• javascript is quicker to search because it performs each song search asynchronously