You can make a backup of your songs and transfer it to your other devices in 1 file. You're right, it's not sync but we've been working on sync for over a year and it's more complicated than it seems - mostly between different platforms.
We sent out a newsletter about it this year. Check it out here:
http://eepurl.com/cwMYl5
We have a feature request survey and you can cast your vote to the Android sync here:
https://goo.gl/forms/eRR0xH8HBCRMOwl32
We are a small company, put a lot of work into development and the updates have been free of charge in the past years.
I'm sorry for your disappointment and please free to contact us directly for a refund.
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