We've already seen some rumors of a cloud-syncing music store for the HP TouchPad, not to mention talk of "Music Synergy," and it now looks like there could be some more movement on that front. According to Billboard.biz, HP's discussions with the major record labels about a cloud-based service of some sort are now "heating up," although that apparently doesn't mean an actual launch is imminent. One major label exec told Billboard that the service could be "something like Qriocity for a variety of media, which can be delivered on any HP device," but added that "we don't know how serious they are," which isn't exactly an encouraging thing to hear. That uncertainty was echoed by other unnamed sources, who were reportedly unsure about how quickly HP could launch such a service (at least six months away, according to some), while one other said that HP is still "trying to narrow down what their service will look like."