MPlayer has started working. How odd is that? Here are the results of running the other two in XTerm:
~ $ kagu
Traceback (most recent call last):
File "./kagu.py", line 25, in ?
if remote.remote(sys.argv): sys.exit(0)
File "/usr/lib/kagu/remote.py", line 15, in remote
os.mkfifo(FIFO) #create fifo
OSError: [Errno 2] No such file or directory

~ $ canola
Traceback (most recent call last):
File "/usr/bin/canola", line 18, in ?
import ecore
ImportError: No module named ecore