Gold Coast hooker Nathan Peats is the first player to speak out on the ban, labelling the idea "stupid".
"Now how am I going to listen to music before the game? I think it's stupid, player doesn't come off injured & message some 1 to put a bet on," he tweeted.
The NRL is also likely to enforce a change to the traditional announcement of teams on Tuesdays, from a soft 17-man line-up to a strict 21-man squad.
Coaches will then be forced to announce two drop-offs ahead of their last training session, and the final 17-man line-up to be confirmed an hour before kickoff.
The move is designed to eliminate shock team changes that have the potential to disrupt betting patterns in the lead-up to a match.
-AAP