Nah, that's very cool of you all to suggest things to avoid making big mistakes. Yep, I was thinking of a cheap way around things, but if it means rubbish quality I'll definitely forget about it. I've got an iPod Nano (or rather I had, as my lady has taken a very strong liking to it ;). If everyone is suggesting the Airport Express, I guess that's exactly what I will be looking for.
Apologies for putting the iPod in the title as a substitute for -everything-that-will-accept-a-3.55mm-jack. Controlling the playlist is not an issue, as I am always surprised by my musinc when I turn the Shuffle on.
So once again, thanks for all your very good advice (it's the second time today, as someone at the top of a stormy hill pointed out to us we were going in the opposite direction to where we wanted to be, thus preventing us from making another big mistake - the wonders of just asking people! ;).
Cheers,
Dragos