The MC channels Comcast do not carry are those available only to MC's commercial subscribers. I doubt if any cable system wants to devote the bandwidth needed for all 100-plus DMX channels.
OTOH DMX will sell its product directly to consumers for about $200 a year if you're willing to shell out about $500 for the Ku-band FSS dish, LNBF, and receiver. Music Choice will not sell directly to non-commercial units; and commercial rates start around $500 a year. The DMX receiver is most interesting. Song info is beamed to the remote, dynamic range can be set via the remote (especially helpful in noisy environments), can program it to daypart the channels, among other features.
On the downside, the number of DMX specialty formats has been dwindling as more and more channels are changed to ultra-fine niches of rock/urban music (about 2/3 of their channels) -- losing such formats as 4 German channels, Flemish, folk, Dixieland, Cajun, polka, Norwegian, nature sounds, classical guitar, a true 1950s oldies, -- over the past 10 years. On the bright side, they still carry several easy listening type channels, 5 classical/opera channels, two Italian channels, three French, bluegrass, and new age music.
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> I know this is a Music Choice and DMX question, but there is
> no other section on this site to ask this, so here goes: I
> have Comcast Cable in Philadelphia, PA, they offer MC, I
> noticed they do not carry all the channels listed on the MC
> website, for example: Indie Rock, Adult Top 40 and Taste of
> Italy, to name a few. The selection is loaded with Spanish
> channels, for some strange reason, they do carry a few DMX
> channels which are only Spanish. My question is why??? and
> why don't they carry other DMX channels, such as Beach
> Oldies, Rock and Roll Oldies, etc., Thanks..
>