Thanks to Alex I found the MusicIP Mixer , which is a fantastic tool that detects the "style" of MP3 tracks and suggests mixes of your tunes across the whole music library...

and if you have thousands of tunes in your archive already, that IS a real solution... amazing what gems this tool diggs out...

and the best: once you find a track that really HITS your mood 100% you create a new mix tailored to that mood - and even save if for later!

Fantastic to see applications becoming more and more personally appealing... don't wanna leave the machine right now listening to MY current mood mix :-)

Happy New Year!