First post in a 2.5 year old thread. Not bad. Now hijack it and you'll fit right in.
I have Music! and a PC. It is a pretty decent package, and has the significant benefit of still being under development. My understanding is that Panther Studios owns BOTH products, but that they have no intention of updating TitleTrack.
I think you could get Music! to work with a remote, but you might need something like Girder, IRA or Sage or some program like that to interface with the IR receiver on the PC. I've not done that; I just have a wireless keyboard and a wireless mouse. The true HTPC guys would know more about this than me. I have the Gyration compact keyboard and mouse and am satisfied with that so far. I just didn't want to deal with the programming necessary to implement Girder, et. al. I mean, you've got to have a keyboard for the computer anyway.
But, you know, the Mac guys will be along shortly to set you straight.
bibere usque ad hilaritatem