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Also is there a way to buy songs from the iTunes Store in apple lossless?"
Unfortunately no. That is one of the, several, complaints about the iTMS. First you have "protected" files that are not convertible to other formats (not directly anyway; you can burn to Audio CD then reimport), are not portable to other music players (again, not directly, work arounds exist), and to top it all off, they are advertised as "CD quality" but really you are buying a rather low bit rate for about the same as if you just went out and bought the physical CD instead. Of course, with CDs you can not buy just the tracks you want.
Hey maybe that is what Apple should do. Sell individual songs at 128kbps/MP4 but if you buy the full album you instead get 192+kbps/MP4s. Then you encourage the real audiophiles to buy albums, not singles. And artists can not complain that the iTMS method only sells their main hits and allowing users to not discover the other songs on their albums.
Patrick