I read the documentation on AutoProfile...but I don't really understand it.. Here it is:

Included in the misc folder of AutoProfile is a script called "xmms_currenttrack". Install this script in your $PATH ( what path!?!?? )and give it executable permissions, and specify the program using a pipe.

Alternatively, in XMMS, go to Options->Preferences->Effects/General Plugins.
Configure the "Song Change" plugin. In the song change command box, put

echo "%s" > /path/to/output/file

and be sure to enable the plugin. Select the file location in AutoProfile and you should be done
Ok ..the second alternative looks easy...but I don't understand which is the "/path/to/output/file"..and then they say to select the location in AutoProfile ..do they mean the location of the XMMS plugin?..if they do.. where is it located ?
thanks in advance

PATH is an environmental variable that contains the paths to all the executables on your system.

If you know where the AutoProfile directory is..go to that directory, there you 'll see a folder named "misc"...lets suppose your path uptill now is

/home/AutoProfile/misc/

now type this command on the shell

export PATH=$PATH:/home/AutoProfile/misc/

Now the "xmms_currenttrack" script is installed in your PATH variable.

Run your application from the same shell.