Thanks for the responses. Tink: I should have checked this before ... the request to start the player completes successfully (200) - as expected as other commands in the script work ok. zunder 1990: It is Umbutu ... it is the 64 Studio distribution (V 2.x) that I added the lampp package into. at the risk of revealing the true depth of my ignorance: For design reasons, the calling script attempts to start the player (in php) with
$substr = "./mus_Player.php&";
$output = shell_exec($substr);
Within the called script teh player starts with
$CMD = '/usr/bin/mpg123 -q /home/xfer/Music/'.$row['filen'];
In other OSes I am more familiar with, calling a script within a script like this increases 'depth' and there are limits to this....could I be hitting something similar in linix? now that the obvious is eliminated , I am going to have to explore the unlikely. Thanks for the help.