[Yello] Yello VideoCD's

I own all 5 Yello Video CD's (Tied Up, Oh Yeah, Of Course I´m Lying, Goldrush, The Race) but I never had the chance to get them running on my DVD-Player (PAL) Yes they all show the music-tracks, but not the Video Track. Also the DVD in my PC does not get the Videos. Are these VideoCD's a sort of hybridCD (Audio/Video) that can only playback on the old Philips VideoCD Players ???