Maintaining treatment gains remains a challenge to smoking cessation programs. Smokers prone to negative affect are most likely to relapse. In an effort to improve maintenance, a standard cognitive-behavioral treatment was supplemented with the provision of computer-controlled audiotape players containing personalized therapeutic messages. Either the standard treatment alone, or the standard treatment plus 2 months use of the tape player were provided to 41 smokers. No outcome difference was found between the 2 conditions during the 1-year follow-up. (The combined 1-year abstinence rate was 61%, with 34% continuously abstinent.) The frequency with which participants used the device predicted both posttreatment coping skill use and smoking rate. Most notable was an interaction between treatment condition and negative affect. Provision of the devices negated or reversed the usual association between negative affect and poorer outcome.