error loading libjack.so.0

Hi!

first, I really like moc. Its one of the coolest applications that I use.

I upgraded moc on my arch linux system and now when I run mocp I get this error

mocp: error while loading shared libraries: libjack.so.0: cannot open shared object library: no such file or directory.
where can I get libjack.so.0? Where where should I put it once I get it?

If this is just something I would fix by compiling from source, then I'll just compile moc from source!

thanks