Mac offline editor - can't see shows

Am I being dim or have i got something wrong?

I'm using the offline editor (v1.4.1) on my Powerbook G4.  I'm running OS X v10.3.9 (Panther).  I can't see the shows that are sitting on either an external hard drive or on a flash drive.  Under file open, I can see the hard drive and flashdrive, but can't open those or see shows on them.

Any suggestions?

Thanks.