As stated before: we can use lossy formats up close to the end. so if
someone has to replay a track, because of the realisation that the original
playing was to bad, it's smaller to re-upload and re-download. That should
notch down the datastream and space-limits a bit.
We should also agree on a sampling format (bit-depth, samplerate). Which is
quite a big factor I believe.
Music was my first love and it will be my last (John Miles)