I had an old Slacker account long before I got my M3. Tried a couple of times to log in to the account in the car to no avail. Occurred to me that my account might not permit streaming. Went on the Slacker site today. They are currently offering a one-year upgrade to "Slacker Plus" for $29.99. I purchased the upgrade, which also upgrades the sound quality to Slacker's max. Later today, got in my car and was able to log into my account. What I didn't expect was to be absolutely blown away by the sound improvement. Clearly the basic "Tesla" account is at a much lower bit rate. Difference was night and day. Like everyone else, I would love a better solution for music streaming, but for $29.99, this upgrade was well worth it. I'm no audiophile, but if you like your music, you should consider doing this. Definitely worth the cost.