If you have really good ears and can appreciate it, you might want to get a good quality set of earbuds. Audiophiles usually poo-poo the stock earbuds and recommend ebuds like Shure.

But alas, after market earbuds usually have absurdly long wires. Hassle and added weight.

Glad you like the T60. I made a case for it that allows me to hang it on my sternum strap. Used 1/8" thinlight as padding between 2 pieces of fabric. Too bad the player didn't come with a case, and the iriver site doesn't have an aftermarket case.
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Steve