.wav to .flac conversion using MAC OS X

I'm exhausted from looking on the net without finding a solution and I need your help. I have 300GB of .wav files stored on a hard drive after spending a long time ripping my CD collection. I need to convert them to .flac and save them on another drive for backup. I used xACT to do the conversion and things were great until I added the albums (I did one album as a test) to PLAY, a music software that plays .flac files. The songs were added without any properties (name, album, artist). Please keep in mind that the files are stored with the names example Money.flac.
If any one has come across a similar problem and found a workaround, please help me.

thanks,

kas