Just received an email with this new way to spend your stars.
https://musicvoucher.nintendo-europe.com/php/index.php
The pricing is as follows:
1 Song - 350 Stars
2 Songs - 700 Stars
An Album - 3000 Stars
Been trying to access the site where the music voucher works (http://emusu.com/backstage/), but I can't seem to find a price. On the FAQ from Nintendo it shows a song cost 1 quid and an album 8.
Is this better than trading for Wii Points? For 3000 stars you get an album (around 10€); while with 4000 stars you get 1000 Wii Points (10€).