Damir Well, because there is absolutely no reason to keep all in wav format since 80% of the songs I play are from karaoke-version. They all in mp3 format to begin with. If I convert them to wav format they will not gain any extra quality, there is no magic in that.
My current working library on iPad in ST3 is 20Gb (350 songs, 95% are multitracks). If I've left them in wav format my backup would be around 90 Gb. Let's do simple math: 90Gb inside ST3, 90Gb for the backup and 90Gb for the source folder = 270Gb total on an iPad. Usually I have 2 backups from different dates. And it is much faster to transfer 20Gb than 90Gb.
Bottom line:
- No gain in quality for me (source is in mp3 anyway)
- Much slower transfer of backups and song folders
- Much slower iCloud sync
- For my current library I will need more expensive iCloud storage option
- General waste of space
I prefer to drive efficiently.