Hello, I was trying to use this coupon that you sent me to get $10 off of a Master Upgrade and it doesn't work . I am a long time Mac user but I kept having problems with media center 22 locking up on me. I was working with Matt on this forum to figure out the issue and never had any luck. Since I like using jriver so much (I'm a DJ), I thought I was going to have to switch to a PC. I bought a Dell computer and bought jriver 23 for the PC, but couldn't handle windows 10. I went back and tried jriver 23 on MacOS Sierra hoping it had gotten better, and to my surprise it did, no more lockups. Long story short, I am back on a mac and was looking at a mac or master license. Can you give me any sort of deal on a master or mac license since I don't use the PC version that I just bought? . Thank you!