You should use the latest development version of LÖVEPotion so you can get .ogg streaming support.
Then convert your .wav to .ogg
Code:
find . -name \*.wav -exec ffmpeg -i {} -acodec libvorbis {}.ogg \;
Code:
find . -name \*.wav.ogg -exec rename 's/.wav.ogg/.ogg/' \;
Also, you should do a git rebase, and remove the .wav files to make clone times faster.
I'm working on a fork of LÖVEPotion that uses LuaJIT, and when I try it with this game, it crashes, probably because it ran out of ram. (LuaJIT is quite a bit faster, but it also uses quite a bit of RAM)