I searched the RTFs of some of the magic item sections of the SRD for the word listen, which appears seldom, evidently. I only found one: that an intelligent item may have 10 ranks in listen for 5,000 gp, so that might be one route to a magic item helping a character in that respect.
Thanks. Could be an option if there is no other ways.
>William_2
Thanks a lot. Intelligent item! I haven't thought of it. Hmm, could be an interesting option when a skill is cross-class, or the character has low mental ability scores.