Hi! I'm an italian boy, so probably my english won't be so good...
I must convert wma files to mp3 files with my MacBook.
In many forums Switch is described as the better software that could do this, but I have a problem... 
When I "click" the conversion button, Switch asks me to install the "Flip4mac" plug-in.
So I installed Flip4mac, but after this Switch is unable to convert these files. 
Even if Quicktime is able to read them, Switch cannot.
What can I do? I need to get mp3 from wma...
thanks