Here is another thought, by changing this slightly...you would only have one exe and be able to use it over and over again w/o having different exe for each different path to move to..
change this line:
$destinationmedia = $rr.GetInfo("=$destinationmedia$")
TO:
$destinationmedia = $rr.GetInfo("=$"&$CMDLINERAW&"$")
Then define each var in the rr ini as such
altmusic=<path to alt music>
rockmusic=<path to rock music>
ect...
And then change your exectbl line for each btn cmd to something like this:
"altmusic","RUN;c:\program files\road runner\SKINS\MySKIN\MoveMusic.exe|<exact nam e of variable for this btn>"
examples..
"altmusic","RUN;c:\program files\road runner\SKINS\MySKIN\MoveMusic.exe|altmusic" or
"rockmusic","RUN;c:\program files\road runner\SKINS\MySKIN\MoveMusic.exe|rockmusic"