SoundTrax WMA problem

I have a huge number of lossless WMA files which I would like to use to compile a range of disks for parties over the summer.

QUEUE THE PROBLEM :

SoundTrax - the latest version - doesn’t support lossless WMA files. It imports the files - and plays them as noise.

Any ideas ? It’s such a pain. Surely WMA compatibility means WMA Lossless too ?

Thanks

Jules