X1 Custom Firmwares   You can scroll through the pages to see some of the past themes people have created, but only the last page or two have updated themes for the 2.0 firmware.  Also, FiiO has their own forum on their site and people have posted themes there, as well.

For a dedicated music player that only costs $100, some people really expect a lot, it seems.  You can't expect a DAP for that price to do everything you want, nor can you expect the manufacturer to satisfy everyone's software update requests.  Also, for around $100, you can go buy the xDuuo X3...

  You could always create album folders by letter...   Folder "A" AC/DC albums Alice Cooper albums Anthrax albums   Folder "B" Bauhaus Black Flag Boomtown Rats     Or, you could create multiple letter albums, such as...   Folder "A - C" AC/DC Alice Cooper Anthrax...

  For the X1, I think it depends on how often you're going to be switching back and forth from the headphone output and line output.  You may find it to be annoying and tedious to have to go into the settings each time to make the switch.  I mainly use my X1 as a DAP in my car (Kia Soul) so...

Here's a frequency chart that shows where most instruments fall within the frequency range.   http://www.independentrecording.net/irn/resources/freqchart/main_display.htm   Adjust accordingly.  The lower frequencies are the left-hand sliders below 500Hz.  Sliding those up will increase your...

  Thanks.  That's exactly what I did.  I just contacted them via chat to ask them about the discount.  Then, they had me place the order without paying.  Once the pay options screen came up, I gave customer service the order number and they then sent me an e-mail with a link for the price...

  Do you have anymore details?  Do we need to contact them for the discounted price before ordering?  Will they verify that someone is a member or will they just take someone's word for it?  Thanks.

  House Of Leaves by Mark Z. Danielewski

  I'm pretty sure there have been some custom themes posted throughout this thread, but FiiO has their own thread, as well, that may or may not have a custom theme section for the X3ii.  I know that their are custom theme threads over there for the other devices, so I would imagine you might...

  Just yesterday, the SanDisk 200GB cards were only $59.95 on Amazon, which is why there's a delay for the delivery now.  Also, Adorama price-matched Amazon's price for the SanDisk cards, as well.  I would suggest to start following SlickDeals, if you don't already.  

  First question...Is your X1 on FW 1.6?  There were improvements made to the wheel scrolling response.   http://www.head-fi.org/t/781372/official-x1-stable-firmware-discussion-thread-version-1-6-greatly-improved-scroll-wheel-response

  Not too sure, to be honest.  Once I started re-ripping all of my CD collection a couple of years ago using both dBpoweramp and JRiver Media Center, I just made the decision to tag all of my "The [blank]" artists as "Beatles, The."  I know JRiver will allow you to ignore articles such as "a...

  I believe that's the whole point of Line Out.  It's there to provide a clean, flat source of the audio out to an amp or EQ of your choosing.

  You should just be able to hit play on the first song of the first album folder and it will play through all of the other folders in the listed song order if you have the option to play through the folders selected in the settings.   The hierarchy setup example on my player would be...

  You should be able to hold down the upper-left circle button on the front of the device.  That will take you back to the Now Playing screen.

The root of the card is the top level when you first look into the directory of a memory card.  It just means don't put the file into a folder or anything like that.

For those interested, Adoroma is having a flash sale on these right now for $99!   EDIT:  The deal is dead now.

While a bit pricey (MSRP $129.99), I've had nothing but great results using the Plantronics BackBeat FIT headphones while running.  They're over-the-ear, though, so they may not meet the OP's criteria of fitting under the helmet, but mine have held up quite well for almost a year now.  I even...

I'm sure that FiiO is spending a lot of time and resources currently on the newly released X3ii and X5ii models.  They'll get back to the X1 soon enough, I'm sure.

Is it possible?  I don't know, but it hasn't been done, yet, as far as I know.

Unfortunately, the shuffle feature on the X1 isn't very good, in my opinion.  I have about 1500 FLAC files on my card, and the X1 seems to only play about the same ~200 or less songs multiple times before throwing in one of the many other songs at random.  It's been like this for me on all of...

Have you tried the custom theme created by TCD1975, yet?  That may help with your selection issue.  If not, you can always revert back to the original firmware.   http://www.head-fi.org/t/749000/x1-custom-firmwares/30#post_11346158

For your first question, with some forums it's inherent that you reach a number of posts in other threads before being allowed to start a new thread. This cuts down on spam threads being started. I'm not quite sure what the post count is here before you can create a thread, but you can do a...

  Not the BackBeat Go 2, but I've been using the Plantronics BackBeat FIT about five days per week since August of last year with no issues.  I was able to get it new off eBay for just under $70, which was about $20-30 cheaper than elsewhere.  Prior to that, I had just used a couple of other...

Like jodgey4 said, you want to search for "earbuds" or "ear buds." The Headphone List has a lot of good information on the different types and styles, if you take the time to read through it. http://theheadphonelist.com/earphone-fit-guide/