Mod Bod
Maybe I'm not understanding what you are saying.
EZdrummer sample libraries are stored in a proprietary compressed file. You can't load them in any other sampler than a Toontrack sampler like EZdrummer or Superior Drummer. So the only way to use EZdrummer samples would be to create a new sample set by bouncing a series of drum hits at various velocity levels to audio and slicing and dicing them. Since there are multiple samples per velocity layer as well as room mic samples that task would take up more time than it is worth anyway.
That said, I recall reading correspondence with TT staff about creating your own set of samples in this way and they have a problem with it. They will protect their creative property. I was passing on advice to the OP that this might not be a good idea, especially announcing it on a public viewed forum. Pdarg has been a regular around here and I didn't want to see him step in something he didn't want to step in.
I would agree that if this is the case, that the samples are stored in a proprietary format, then the issue perhaps changes. This was never mentioned in this thread before and was never mentioned or even alluded to by the OP or yourself. Of course I intend to verify this as I don't own the sample set. I do have Superior Drummer and no, the samples such as the Ayotte kit are -not- in any proprietary format they are simple multi-channel wave files. You can open and convert the files in any decent wave editor. Hardly proprietary. Based on my experience I assumed the same for EZDrummer. Compressed files like flac are not proprietary either. I will ask - have you -verified- that they are proprietary and how did you do so? So until I verify this statement I can't comment specifically. Again, notice the hesitation to pass judgement until facts are -verified-?
However, I will point out that there are numerous examples of samplers loading and/or converting sample sets from other companies, including those in actual proprietary formats, for example, Kontakt opening Gigasampler files, or programs like CDXtract that will convert Akai, SF2, Giga, Kontakt, Halion...the list goes on. I have yet to see a single sample company -ever- object to or pursue the extraneous use of samples that have . been paid for but I guess there's always a first. Products like Spectrasonics Trilogy etc. and Gigasampler have used proprietary formats by storing all samples in a single dat file so TTracks certainly isn't the first if indeed that is the case.